Crunching the numbers on America's infrastructure...
Crunching the numbers on America's infrastructure...
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
over WAPPOO CREEK
1 MI S OF US 17 JAMES ISL
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 45,400 vehicles per day and is 70 years old.
Its sufficiency rating of 52.7 places it below the national average of 63.6.
The NBI records a navigation clearance of 32 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 762 feet long — a moderate crossing, about 30 seconds.
A movable bridge — it may occasionally stop for boat traffic.
About 32 feet above ground — moderate height, similar to a 3-5 story building.
About 45,400 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 57 feet wide with 3-4 lanes — standard 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
1956
70 years old
Structure Type
Steel Movable (Bascule)
Total Length
762 ft
232.2 m
Deck Width
57 ft
17.5 m
Spans
1
sections between supports
Max Span
153 ft
longest unsupported section (46.5 m)
Traffic Lanes
5 lanes
Two-way traffic
Clearance Below
32 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
45,400vehicles/day
32.76637°N, 79.97409°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.