Reach Without Large Closures
Rope access, drones and under-bridge units let us inspect long spans, tall piers and over-water structures while keeping lanes open wherever possible.

To protect the traveling public by finding structural problems early, documenting them accurately and helping owners fix them before small defects become costly closures.
Who We Are
H2O Drones provides bridge inspection, load rating support and maintenance construction for transportation agencies and infrastructure owners. Our inspection teams are led by engineers and technicians who understand NBIS requirements, element-level condition assessment, fracture critical member review and scour evaluation. Our maintenance crews perform deck repairs, joint and bearing replacement, steel and concrete repairs, painting and coating work, and emergency response after impact or flood events. We combine field findings with structured reporting, so owners receive clear recommendations that tie directly to preservation budgets and repair priorities.
Bridges rarely fail without warning, and H2O Drones exists to find that warning early. For and nearby agencies, we maintain our own access equipment, safety systems and trained rope access technicians, which lets us inspect difficult structures efficiently and safely. We take care to separate what is urgent from what is routine, and we communicate critical findings immediately rather than waiting for a final report. That approach helps owners protect the public, manage risk and plan interventions that keep structures in service for decades.

Compliance
Photographs are georeferenced to the element they document.
Access achieved without closing a whole bridge where possible
Track Record
Our Mission
To give bridge owners complete, defensible condition data and skilled maintenance crews that turn inspection findings into durable repairs.
Sectors
Consulting engineers get clean inspection data they can load straight into reports.
Client Feedback
They flagged a cracked welded detail we had walked past for years. Their report included clear photos and a repair recommendation, and the fix was complete before the next winter. That kind of detail is why we renewed.
After the flood we needed pier scour data quickly. Their dive team was on site within days and the survey gave our engineers what they needed to prioritize countermeasures.
Reports arrive organized by element and condition state, and they import cleanly into our system. Our budget requests are easier to justify because the data is credible.
Send H2O Drones your bridge inventory and inspection cycle and we will propose teams, access methods and a reporting format that fits your system.

Inspections follow the National Bridge Inspection Standards and agency element-level protocols, led by qualified team leaders who document defects with measurements, photographs and clear recommendations.
Our Advantages
Rope access, drones and under-bridge units let us inspect long spans, tall piers and over-water structures while keeping lanes open wherever possible.
If we see a condition that threatens public safety, you hear from us immediately by phone, with photographs and measurements, well before the written report is complete.
Fall protection, confined space entry, marine safety and traffic control procedures are rehearsed, written and enforced on every structure.
Because the same company can inspect and repair, defects move from report to work order with fewer handoffs, and we learn from the repairs to improve future inspections.
Inspections are directed by team leaders who meet federal qualification requirements, so findings stand up to review by owners, auditors and structural engineers.
Element condition states, defect photographs and recommended actions are delivered in formats compatible with agency bridge management systems.
Rope, confined space and over-water work runs under written rescue planning, because access risk is the real hazard in this trade.
The firm that identified the defect can also carry out the repair, which removes the handover where findings usually get lost.
Anything affecting public safety is reported to the owner immediately in writing, rather than appearing weeks later in a report.
Our Services

Dive teams and sonar surveys assess piers, footings, pilings and channel conditions below the waterline. We measure scour depth, locate undermining, evaluate marine growth and corrosion on foundations and report findings that support scour critical ratings and plan of action development.
Request a Quote
Replacement of failed strip seals, finger joints and elastomeric, pot or rocker bearings, including temporary jacking and shoring designed by the engineer. Leaking joints and frozen bearings accelerate deterioration of beams, seats and piers, so timely replacement is among the most valuable preservation actions.
Request a Quote
Removal of deteriorated concrete, rebar cleaning and replacement, patching, latex-modified or polymer overlays and membrane installation to protect decks from chloride intrusion. Chain drag, half-cell and ground-penetrating radar surveys help define the repair limits, so crews remove what is unsound and no more.
Request a Quote
Close-up examination of fracture critical members and welded details where tension-zone failures could lead to collapse. Inspectors use visual, dye penetrant and magnetic particle methods, as well as ultrasonic testing where required, and document fatigue-prone details such as cover plate ends and welded attachments.
Request a Quote
Biennial and special inspections conducted according to the National Bridge Inspection Standards and agency manuals, covering decks, superstructure, substructure, bearings, joints, barriers and channels. Teams record element-level condition states, measure section loss and cracking, photograph defects and deliver reports that feed directly into bridge management systems.
Request a Quote
Field verification of member dimensions, section loss and material properties supports load rating calculations by licensed engineers. We provide the measurements, condition data and structural details needed for accurate rating factors and for posting or restriction recommendations when capacity is limited.
Request a Quote
Drone imagery and rope access teams document hard-to-reach areas with limited lane closures, while rapid response crews assess strikes, fires and flood damage and install temporary supports. Findings are delivered the same day so owners can decide about closures and load restrictions without delay.
Request a Quote
Spot and full repainting of steel superstructures, including abrasive blast cleaning, containment, primer and topcoat application, plus cut-out and replacement of corroded plates and connection repairs. Environmental controls and lead-safe work practices protect crews, waterways and neighbors.
Request a QuoteCompliance
Photographs are georeferenced to the element they document.
Our Process
We review plans, previous reports, load ratings and maintenance history, then prepare an access plan, safety plan and traffic control approach tailored to the structure.
Teams examine each element, measure defects, perform nondestructive testing where indicated and photograph conditions. Critical findings are reported immediately to the owner.
Findings are organized by element and condition state with recommended actions, cost-conscious priorities and supporting data for load rating and bridge management updates.
Approved repairs are scheduled and carried out by qualified crews, then verified at a follow-up inspection so the owner has a closed loop from finding to fix.
Send H2O Drones your bridge inventory and inspection cycle and we will propose teams, access methods and a reporting format that fits your system.

Rope access, snooper trucks, drones and underwater dive teams reach steel, bearings, piers and foundations that ground-based inspection cannot see, with traffic impacts kept to a minimum.
Projects & Case Studies

Partial-depth deck repair, polymer overlay and strip seal joint replacement on a busy highway bridge, staged under weekend closures. Chain drag and half-cell surveys defined repair limits before demolition started.

Routine inspection of several hundred bridges across mixed rural and urban settings, with element-level reports, photo logs and immediate notification of critical findings. Data was delivered in agency formats ready for bridge management import.

Hands-on inspection of fracture critical members on a steel plate girder bridge, using rope access to reach details beneath the deck. Fatigue cracks at a welded attachment were found early and repaired before they propagated.

Dive and sonar inspection of a multi-span river bridge after a major flood, documenting scour at piers, exposed footings and debris loading. Results supported countermeasure design and an updated plan of action.
Our Process
We review plans, previous reports, load ratings and maintenance history, then prepare an access plan, safety plan and traffic control approach tailored to the structure.
Teams examine each element, measure defects, perform nondestructive testing where indicated and photograph conditions. Critical findings are reported immediately to the owner.
Findings are organized by element and condition state with recommended actions, cost-conscious priorities and supporting data for load rating and bridge management updates.
Approved repairs are scheduled and carried out by qualified crews, then verified at a follow-up inspection so the owner has a closed loop from finding to fix.
Track Record
Send H2O Drones your bridge inventory and inspection cycle and we will propose teams, access methods and a reporting format that fits your system.

Routine inspection programmes are scheduled annually against your asset list.
Questions & Answers
Under the National Bridge Inspection Standards, most bridges require inspection at least every 24 months, with shorter intervals for structures in poor condition or with specific concerns. Fracture critical members, underwater elements and special features can require different frequencies set by the owner.
We choose access methods that suit the site, including under-bridge units, rope access, boats, drones and dive teams. The goal is a close visual and tactile examination of critical elements, with the least disruption to traffic and the environment.
We notify the owner immediately, provide photos and measurements, and discuss interim steps such as lane restrictions, load posting or emergency shoring. A full written report follows, but safety-critical conditions are never held until then.
Yes. Our maintenance crews handle many common repairs, from joint and bearing replacement to deck patching and steel repair. For major rehabilitation, we can support design engineers and agency procurement with constructible, field-verified details.
Element-level inspection breaks a bridge into components such as girders, bearings, deck and piers, then records quantities in defined condition states. It gives owners more precise data for preservation planning than a single overall rating and supports better cost forecasting.
We collect the field data and condition information that load ratings depend on, and we work alongside licensed engineers who calculate rating factors. Where the rating shows limited capacity, we help evaluate posting, restrictions or repair options.
Our Advantages
Rope access, drones and under-bridge units let us inspect long spans, tall piers and over-water structures while keeping lanes open wherever possible.
If we see a condition that threatens public safety, you hear from us immediately by phone, with photographs and measurements, well before the written report is complete.
Fall protection, confined space entry, marine safety and traffic control procedures are rehearsed, written and enforced on every structure.
Because the same company can inspect and repair, defects move from report to work order with fewer handoffs, and we learn from the repairs to improve future inspections.
Inspections are directed by team leaders who meet federal qualification requirements, so findings stand up to review by owners, auditors and structural engineers.
Element condition states, defect photographs and recommended actions are delivered in formats compatible with agency bridge management systems.
Rope, confined space and over-water work runs under written rescue planning, because access risk is the real hazard in this trade.
The firm that identified the defect can also carry out the repair, which removes the handover where findings usually get lost.
Anything affecting public safety is reported to the owner immediately in writing, rather than appearing weeks later in a report.
Routine inspection programmes are scheduled annually against your asset list.

Contact
Routine inspection programmes are scheduled annually against your asset list.
Sectors
Consulting engineers get clean inspection data they can load straight into reports.
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This Privacy Policy explains how H2O Drones ("we", "us", "our") collects, uses, discloses and protects information when you visit h2odronesbridgeinspection.com or contact us about our services. We keep data collection to what is necessary to answer inquiries and deliver contracted work.
Information you provide directly. When you submit an inquiry form, send an email or call us, we receive the details you choose to share: your name, organization, email address, telephone number, the service you are asking about and the content of your message.
Information collected automatically. Our web server records standard technical data for each request, including IP address, browser type and version, operating system, the pages requested, the date and time of the request and the referring page. This information is used for security monitoring, fault diagnosis and aggregate traffic statistics.
We do not knowingly collect special category data, financial account numbers or government identification numbers through this website, and we ask that you do not send such information through web forms or unencrypted email.
We use the information we collect to respond to your inquiry, prepare proposals and scopes of work, deliver and administer contracted services, maintain project and service records, meet legal, regulatory, insurance and procurement obligations, and protect the security and integrity of our systems.
We do not sell personal information. We do not use the information you provide for behavioral advertising, and we do not share it with advertising networks or data brokers.
Where data protection law requires a legal basis, we rely on: your consent, where you have voluntarily submitted an inquiry; the performance of a contract, where processing is necessary to quote, mobilize or deliver services; compliance with a legal obligation, including records retention, tax, safety and public procurement requirements; and our legitimate interests in operating, securing and improving our business, balanced against your rights.
We may share information with service providers who act on our instructions, such as email and hosting providers, and with subcontractors we engage where disclosure is necessary to deliver the service. These parties are permitted to use the information only for the purpose for which it was shared.
We may disclose information where required by law, court order, regulatory authority or a public client exercising audit rights under a contract, and where necessary to establish, exercise or defend legal claims.
Inquiry correspondence is retained for as long as needed to respond and for a reasonable period afterwards for business continuity. Project and contract records, including service logs, inspection records and photographic documentation, are retained for the period required by the contract, by applicable statute of limitations and by insurance and audit requirements, after which they are deleted or anonymized.
We apply administrative, technical and physical safeguards appropriate to the sensitivity of the information we hold, including transport encryption for this website, access controls on internal systems, role-based permissions and staff confidentiality obligations. No method of transmission or storage is completely secure, and we cannot guarantee absolute security.
Depending on where you live, you may have the right to request access to the personal information we hold about you, to request correction of inaccurate information, to request deletion, to object to or request restriction of certain processing, to request a copy in a portable format and to withdraw consent you previously gave.
To exercise any of these rights, write to [email protected]. We will respond within the timeframe required by applicable law and may need to verify your identity before acting on a request.
Our service providers may process data in countries other than the one in which you reside. Where personal information is transferred across borders, we rely on lawful transfer mechanisms and require appropriate contractual safeguards from the receiving party.
Our services are directed to organizations and property owners, not to children. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, contact [email protected] and we will delete it.
This website may link to third-party sites, such as standards bodies or regulatory resources. We are not responsible for the privacy practices or content of those sites, and we encourage you to review their policies before providing information.
We may update this Privacy Policy to reflect changes in our practices, technology or legal requirements. The revision date at the top of this page indicates when it was last changed. Material changes will be made evident on this page.
Questions, requests or complaints regarding this policy may be addressed to H2O Drones, Velperweg 27, 6824 BC Arnhem, Netherlands, or by email to [email protected]. You may also have the right to lodge a complaint with your local data protection authority.
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These Terms govern your use of h2odronesbridgeinspection.com and describe the basis on which H2O Drones provides information through this website. Separate written contracts govern any services we perform for you; nothing on this website creates a contract or an offer capable of acceptance.
By accessing or using this website you agree to these Terms. If you do not agree, please do not use the site. We may revise these Terms at any time by posting an updated version; your continued use after a revision constitutes acceptance of the revised Terms.
Descriptions of services, capabilities, standards, methods and past work are provided for general information. They are not technical specifications, engineering advice or a representation that a particular method is suitable for your site or your regulatory environment.
Capability, capacity and availability statements reflect our general practice and may change. Project figures and performance indicators are approximate and may be rounded or aggregated across contracts.
Submitting an inquiry through this website does not create a contract, reserve capacity or oblige either party to proceed. Services are performed only under a signed agreement, purchase order or awarded contract that sets out scope, specifications, schedule, price and terms. Where this website and a signed contract conflict, the contract governs.
You may view, download and print pages from this website for your own internal evaluation and procurement purposes. You may not copy, republish, sell, scrape, systematically extract or use automated means to access the site, nor use the site in any way that interferes with its operation or security, nor attempt to gain unauthorized access to any system or network connected to it.
All text, graphics, layout, photographs, illustrations, logos and other material on this website are owned by H2O Drones or used with permission and are protected by applicable intellectual property laws. Trademarks, standards names and certification marks referenced on this site remain the property of their respective owners and are used for identification only.
Do not send confidential, proprietary or sensitive information through web forms. Information you submit through this website is not treated as confidential unless a confidentiality agreement is already in place between us, and we may use it to respond to and record your inquiry.
Links to third-party websites, standards and publications are provided for convenience. We do not control and are not responsible for the content, accuracy or availability of third-party material, and a link does not imply endorsement.
This website is provided on an "as is" and "as available" basis. To the fullest extent permitted by law, we disclaim all warranties, express or implied, including warranties of merchantability, fitness for a particular purpose, accuracy, non-infringement and uninterrupted or error-free operation.
To the fullest extent permitted by law, H2O Drones will not be liable for any indirect, incidental, special, consequential or punitive damages, or for loss of profit, revenue, data or goodwill, arising out of or in connection with your use of this website, whether based in contract, tort, statute or otherwise. Nothing in these Terms limits liability that cannot lawfully be limited.
You agree to indemnify and hold harmless H2O Drones and its personnel from claims, losses and expenses arising out of your misuse of this website or your breach of these Terms.
We aim to keep this website available but do not guarantee uninterrupted access. We may suspend, withdraw or restrict all or part of the site for maintenance, security or business reasons without notice.
These Terms are governed by the laws applicable at the principal place of business of H2O Drones, without regard to conflict-of-law rules. If any provision is found unenforceable, the remaining provisions continue in full force.
Questions about these Terms may be sent to [email protected] or addressed to H2O Drones, Velperweg 27, 6824 BC Arnhem, Netherlands.
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The information on h2odronesbridgeinspection.com is published by H2O Drones for general informational purposes. It is not professional advice for any particular site, project or regulatory situation.
Content on this website does not constitute engineering, environmental, legal, safety, regulatory or financial advice, and must not be relied upon as a substitute for a site-specific assessment by a qualified professional engaged under contract. Conditions, codes and permitting requirements vary by jurisdiction and by site.
Descriptions of past work, performance indicators and outcomes describe what was achieved under the conditions of those specific contracts. They are not a prediction, promise or guarantee of results on any other project. Every scope, site and schedule is different.
We take reasonable care to keep this website accurate and current, but we make no representation or warranty that content is complete, correct or up to date. Standards, regulations, specifications and our own methods change over time, and the site may not reflect the most recent position.
Images, illustrations and diagrams on this website are illustrative and may be representative rather than photographs of a specific project. Statistics and project figures are approximate, may be rounded and may aggregate results across multiple contracts and years.
References to standards, codes, certifications or industry bodies are for identification and context. Such references do not imply endorsement by, affiliation with, or accreditation granted by those organizations beyond what is documented in the certificates we provide on request.
Links to other websites are provided for convenience only. We do not control third-party content and accept no responsibility for its accuracy, legality or availability. Inclusion of a link is not an endorsement.
To the fullest extent permitted by law, H2O Drones accepts no liability for any loss or damage arising from reliance on information published on this website. Where we perform work for you, our obligations and liability are governed exclusively by the signed contract between us.
If you believe information on this site is inaccurate or out of date, please tell us at [email protected] so we can review it.
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We aim to meet the Web Content Accessibility Guidelines (WCAG) 2.1 at Level AA as a target standard. Accessibility is treated as an ongoing obligation rather than a one-time project, and we review the site when we make significant changes to its structure or content.
Semantic HTML structure with a single main landmark, logical heading order and descriptive page titles, so screen reader users can navigate by structure.
A visible skip-to-content link, keyboard-operable navigation and menus, and focus styles that remain visible when navigating without a mouse.
Text and interface colors checked for contrast against their backgrounds, layouts that reflow at narrow widths and support browser text resizing without loss of content, and descriptive alternative text or accessible labels for images and icons that carry meaning.
Form fields with programmatically associated labels, required fields identified in text rather than by color alone, and link text that makes sense out of context.
Some decorative illustrations are presented without detailed descriptions because they convey no information beyond the surrounding text. Documents published in formats such as PDF may not meet the same standard as the website itself; we will provide an accessible alternative on request.
This website is designed to work with current versions of major browsers on desktop and mobile, used together with the assistive technologies available on those platforms. It may not perform as expected in browsers that are no longer supported by their vendor.
If you encounter a barrier on this website, or need information from it in an alternative format such as large print, plain text or a document read aloud, contact us at [email protected] or +31263031270. Please tell us the page address and what you were trying to do so we can reproduce the problem.
We aim to acknowledge accessibility reports within five business days and will tell you what we intend to do and when. If an immediate fix is not possible, we will provide the information you needed by another means.
If you are not satisfied with our response, you may escalate the matter to the body responsible for accessibility enforcement in your jurisdiction. This statement is reviewed periodically and whenever the website undergoes substantial change.
Photographs on this website are used under open licenses that permit commercial use.
The following images are published under Creative Commons licenses and are listed with their original title and attribution as given by the source.
Routine & In-Depth Inspection
Rope access, snooper trucks, drones and underwater dive teams reach steel, bearings, piers and foundations that ground-based inspection cannot see, with traffic impacts kept to a minimum.

Our Services
Dive teams and sonar surveys assess piers, footings, pilings and channel conditions below the waterline. We measure scour depth, locate undermining, evaluate marine growth and corrosion on foundations and repor
View DetailsReplacement of failed strip seals, finger joints and elastomeric, pot or rocker bearings, including temporary jacking and shoring designed by the engineer. Leaking joints and frozen bearings accelerate deterior
View DetailsRemoval of deteriorated concrete, rebar cleaning and replacement, patching, latex-modified or polymer overlays and membrane installation to protect decks from chloride intrusion. Chain drag, half-cell and groun
View DetailsClose-up examination of fracture critical members and welded details where tension-zone failures could lead to collapse. Inspectors use visual, dye penetrant and magnetic particle methods, as well as ultrasonic
View DetailsBiennial and special inspections conducted according to the National Bridge Inspection Standards and agency manuals, covering decks, superstructure, substructure, bearings, joints, barriers and channels. Teams
View DetailsField verification of member dimensions, section loss and material properties supports load rating calculations by licensed engineers. We provide the measurements, condition data and structural details needed f
View DetailsTrack Record
Projects & Case Studies
PreservationPartial-depth deck repair, polymer overlay and strip seal joint replacement on a busy highway bridge, staged under weekend closures. Chain drag and half-cell surveys defined repair limits before demolition started.
View Details
Routine InspectionRoutine inspection of several hundred bridges across mixed rural and urban settings, with element-level reports, photo logs and immediate notification of critical findings. Data was delivered in agency formats ready for bridge management import.
View Details
Fracture CriticalHands-on inspection of fracture critical members on a steel plate girder bridge, using rope access to reach details beneath the deck. Fatigue cracks at a welded attachment were found early and repaired before they propagated.
View Details
Underwater InspectionDive and sonar inspection of a multi-span river bridge after a major flood, documenting scour at piers, exposed footings and debris loading. Results supported countermeasure design and an updated plan of action.
View Details
Who We Are
H2O Drones provides bridge inspection, load rating support and maintenance construction for transportation agencies and infrastructure owners. Our inspection teams are led by engineers and technicians who understand NBIS requirements, element-level condition assessment, fracture critical member review and scour evaluation. Our maintenance crews perform deck repairs, joint and bearing replacement, steel and concrete r
Compliance
Photographs are georeferenced to the element they document.
Client Feedback
They flagged a cracked welded detail we had walked past for years. Their report included clear photos and a repair recommendation, and the fix was complete before the next winter. That kind of detail is why we renewed.
After the flood we needed pier scour data quickly. Their dive team was on site within days and the survey gave our engineers what they needed to prioritize countermeasures.
Reports arrive organized by element and condition state, and they import cleanly into our system. Our budget requests are easier to justify because the data is credible.
Send H2O Drones your bridge inventory and inspection cycle and we will propose teams, access methods and a reporting format that fits your system.
Questions & Answers
Routine inspection programmes are scheduled annually against your asset list.
Read MoreUnder the National Bridge Inspection Standards, most bridges require inspection at least every 24 months, with shorter intervals for structures in poor condition or with specific concerns. Fracture critical members, underwater elements and special features can require different frequencies set by the owner.
We choose access methods that suit the site, including under-bridge units, rope access, boats, drones and dive teams. The goal is a close visual and tactile examination of critical elements, with the least disruption to traffic and the environment.
We notify the owner immediately, provide photos and measurements, and discuss interim steps such as lane restrictions, load posting or emergency shoring. A full written report follows, but safety-critical conditions are never held until then.
Yes. Our maintenance crews handle many common repairs, from joint and bearing replacement to deck patching and steel repair. For major rehabilitation, we can support design engineers and agency procurement with constructible, field-verified details.