The average US bridge is 48 years old. That's a lot of birthday candles.
The average US bridge is 48 years old. That's a lot of birthday candles.
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
over NORTHWEST BRANCH
0.05 MILE SOUTH OF MD 650
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 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 21,112 vehicles per day and is 116 years old (reconstructed in 1955).
Its sufficiency rating of 68.0 is above the national average of 63.6.
For travelers with bridge anxiety
This bridge may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 60 feet long — a quick crossing, under 5 seconds at highway speed.
An arch bridge design with some openness to the surroundings.
No height data available — likely a standard overpass height.
About 21,112 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 70 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
1910
116 years old (rebuilt 1955)
Structure Type
Concrete Arch (Deck)
Total Length
60 ft
18.3 m
Deck Width
70 ft
21.3 m
Spans
1
sections between supports
Max Span
56 ft
longest unsupported section (17.1 m)
Traffic Lanes
4 lanes
Two-way traffic
Daily Traffic
21,112vehicles/day
39.00158°N, 76.98321°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.