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.
Fun fact: The average American crosses 4 bridges a day without even noticing.
over SINKING CREEK
1 M S OF WILSONVILLE
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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 21,011 vehicles per day and is 71 years old (reconstructed in 1979).
Its sufficiency rating of 64.5 is above the national average of 63.6.
For travelers with bridge anxiety
This bridge is likely to be a comfortable crossing for most travelers.
This bridge is 100 feet long — a quick crossing, under 5 seconds at highway speed.
This is a culvert — you may not even notice you're crossing it.
No height data available — likely a standard overpass height.
About 21,011 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 84 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
1955
71 years old (rebuilt 1979)
Structure Type
Concrete (Continuous) Culvert
Total Length
100 ft
30.4 m
Deck Width
84 ft
25.5 m
Spans
6
sections between supports
Max Span
15 ft
longest unsupported section (4.7 m)
Traffic Lanes
5 lanes
Two-way traffic
Daily Traffic
21,011vehicles/day
35.97365°N, 83.23328°W
Concrete (Continuous) Culvert
A concrete culvert is a drainage structure that allows water to flow beneath a road. While technically not a traditional bridge, culverts over 20 feet are tracked in the national inventory.
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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.