Did you know? The oldest bridge in the NBI was built in 1697.
Did you know? The oldest bridge in the NBI was built in 1697.
Analyzing deck conditions, superstructure ratings, and bad puns...
over ASHLEY RIVER
IN CHARLESTON
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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 38,250 vehicles per day and is 100 years old (reconstructed in 1988).
Its sufficiency rating of 57.3 places it below the national average of 63.6.
The NBI records a navigation clearance of 20 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 1733 feet long — a longer crossing, over 1 minute.
A movable bridge — it may occasionally stop for boat traffic.
About 20 feet above ground — moderate height, similar to a 3-5 story building.
About 38,250 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 46 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 1988)
Structure Type
Steel Movable (Bascule)
Total Length
1,733 ft
528.2 m
Deck Width
46 ft
14.1 m
Spans
1
sections between supports
Max Span
146 ft
longest unsupported section (44.5 m)
Traffic Lanes
3 lanes
One-way traffic
Clearance Below
20 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
38,250vehicles/day
32.78341°N, 79.96123°W
Steel Movable (Bascule)
A movable bridge can change position to allow passage of boats or other traffic. Steel movable bridges include lift, bascule (drawbridge), and swing types.
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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.