Almost there! Just bridging the gap...
Almost there! Just bridging the gap...
Fun fact: The average American crosses 4 bridges a day without even noticing.
over ALLEGH RIV 10 ST BY-PASS
AL04 9TH ST BRIDGE
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 22,462 vehicles per day and is 100 years old (reconstructed in 2020).
Its sufficiency rating of 64.8 is above the national average of 63.6.
The NBI records a navigation clearance of 15 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 995 feet long — a moderate crossing, about 30 seconds.
A suspension bridge — an open design, typically high above the waterway.
About 15 feet above ground — standard overpass height.
About 22,462 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 38 feet wide with 2-3 lanes — moderate width.
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
1926
100 years old (rebuilt 2020)
Structure Type
Steel (Continuous) Suspension
Total Length
995 ft
303.3 m
Deck Width
38 ft
11.6 m
Spans
3
sections between supports
Max Span
430 ft
longest unsupported section (131.1 m)
Traffic Lanes
4 lanes
Two-way traffic
Clearance Below
15 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
22,462vehicles/day
40.44660°N, 79.99970°W
Steel (Continuous) Suspension
A suspension bridge hangs the deck from cables supported by tall towers. This design enables the longest bridge spans in the world.
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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.