Bridge Clearance, Tunnels and Signs

15,000 bridge strikes a year*.

* Source: data from the National Highway Traffic Safety Administration (2021)

DMP scans bridges and tunnels at highway speed with 3 mm LiDAR precision.
No lane closures, no crew on live roads.
Delivered in SNBI-ready formats.

The challenge

After every resurfacing project, clearance is reduced by inches. The database remains unchanged.

Days per bridge, per survey cycle

Stale data causes bridge strikes

Federal compliance deadline: 2028

Energy sector can’t wait for route surveys

Traditional surveys require lane closures, traffic control, and on-road crew exposure.

New York State logged 350 bridge strikes in 2024 alone.

The updated SNBI requires states to deliver more granular minimum and maximum vertical clearance data.

Wind turbine blades, drilling rigs, and refinery components push clearance tolerances daily.

Creating the data is already a challenge – maintaining it is even more difficult.

Each inaccurate clearance record in a permitting system is a potential strike waiting to happen, with real liability and infrastructure damage.

This isn’t optional. Waiting until 2027 leaves no margin for a statewide re-survey.

Stale data forces expensive reroutes or permits that lead to strikes on aging infrastructure.

Our solution

Highway speed.
3 mm precision.
No crew in traffic.

DMP’s mobile LiDAR platform collects vertical clearance data at full highway speed — no lane closures, no traffic impact. For over 10 years, we have captured the road network in North America with unmatched precision, totaling 975,000 miles as of today.

3 mm LiDAR precision

248,536 Bridges & Overpasses in database

0 Lane closures Scanned at highway speed. No crew in traffic.

Ground-truth LiDAR scanning
at scale

Our fleet-operated scanning vehicles capture precise point clouds, 360° overlay imagery, and full measurement data for every bridge, tunnel, sign structure, and overhead obstacle. Already deployed in 48 US states and coast-to-coast in Canada. Not a pilot, a production system.

Precision	3 mm LiDAR
Image definition	72 Megapixels / 360 deg
Points Density	~1,000 points / m2
Format	JPG w/ time sync

SNBI-compliant data output

Data maps directly to the Specification for the National Bridge Inventory fields for minimum and maximum vertical clearance. Import-ready for NBI reporting with no manual transcription.

Advanced browsing platform

Full integration with platforms like ESRI, Jakarto, Cintoo. Our data, your tools, your workflows.

Solution comparison

Capturing bridge heights is challenging. We have a solution for you.

Side-by-side comparison of DMP’s LiDAR platform versus conventional fiberglass-rod field survey methods.

Factor	Traditional Survey	DMP Solution
Crew on live roads	Required, unsafe and costly	Not required
Lane closures	Required, with traffic impact	Not required
Survey speed	Hours per structure	At highway speed
Measurement precision and location data	Low precision, often no data on where the measurement has been taken	High precision LiDAR and location data
Data collection	Complex	Automated & formatted

ITS America 2026 Detroit

Meet our team at ITS America

ITS America Conference & Expo 2026 is the ideal setting to see DMP’s vertical clearance solution live. We’re demonstrating with Wyoming DOT — a real state, real data, real compliance story.

It’s not just about bridges

If it’s on a road and it has a dimension, we can measure it. And we probably already have.

DMP’s can scan: Bridges, Overpasses, Tunnels, Signs, Gantries, Automatic Toll Collections, Electronic Logging Devices

83,317 Overhead signs

2,019 Tunnels

248,536 Bridges & overpasses

9,328 Stop lights

61 locations

Country ⇅	State / province ↑	Overhead signs ⇅	Tunnels ⇅	Bridges & overpasses ⇅	Stop lights ⇅	Mapped miles ⇅
Total — all 61 locations		83,317	2,019	248,536	9,328	972,146

No matching locations found.

Infrastructure data captured via DMP mobile LiDAR survey — U.S. and Canada. Coverage data as of June 2026