Fun fact: The average American crosses 4 bridges a day without even noticing.
Fun fact: The average American crosses 4 bridges a day without even noticing.
Almost there! Just bridging the gap...
over POTMC RV;RF&P & BN CANAL
0.0 ARL CO & 0.0 DC LINE
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Fair overall condition rating of 5 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 62,000 vehicles per day and is 101 years old (reconstructed in 1986).
Its sufficiency rating of 59.1 places it below the national average of 63.6.
The NBI records a navigation clearance of 72 feet — the minimum vertical space below the bridge deck. The total height of the bridge structure (including towers, railings, and superstructure) may be higher.
For travelers with bridge anxiety
This bridge has some features that may be challenging for travelers with bridge anxiety. See the tips below for a more comfortable crossing.
This bridge is 1739 feet long — a longer crossing, over 1 minute.
An arch bridge design with some openness to the surroundings.
About 72 feet above ground — an elevated crossing, similar to a 5-10 story building.
About 62,000 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 90 feet wide with multiple lanes — easy to stay in a center lane.
This bridge crosses over water. Focus on the road ahead — the water is far below.
This comfort score is designed to help individuals with bridge anxiety plan their travel. All bridges in the National Bridge Inventory are regularly inspected and deemed safe for travel. This is not medical advice — if you experience severe anxiety, please consult a healthcare professional.
Year Built
1925
101 years old (rebuilt 1986)
Structure Type
Concrete Arch (Deck)
Total Length
1,739 ft
529.9 m
Deck Width
90 ft
27.4 m
Spans
8
sections between supports
Max Span
208 ft
longest unsupported section (63.4 m)
Traffic Lanes
6 lanes
Two-way traffic
Clearance Below
72 ft
navigation clearance under deck
Clearance height compared to familiar objects
Height shown is the navigation clearance below the bridge deck. The total height of the bridge structure (including towers and superstructure) may be higher.
Daily Traffic
62,000vehicles/day
38.90472°N, 77.06889°W
Concrete Arch (Deck)
A concrete arch bridge uses a curved concrete structure to transfer loads through compression. Concrete arches are durable and can be very aesthetically pleasing.
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Data from the National Bridge Inventory (NBI), maintained by the Federal Highway Administration (FHWA).
Data year: 2025. Conditions may have changed since the last inspection.
This information is provided for educational and informational purposes only. It should not be used as the sole basis for any decisions related to bridge safety or transportation planning. Always consult official sources and local authorities for the most current data.