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Why was the bridge always tired? Too many crossings.
over RAMPZ TO I490EB J & S M
LA RAMP I490WB TO I490EB
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Poor overall condition rating of 4 out of 9. This bridge is classified as being in poor condition, meaning one or more structural components have significant deterioration. Poor condition does not mean the bridge is unsafe to drive on, but it does mean repairs or replacement may be needed.
The bridge carries 0 vehicles per day and is 52 years old.
Its sufficiency rating of 14.0 places it below 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 may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 710 feet long — a moderate crossing, about 30 seconds.
A standard bridge design.
About 15 feet above ground — standard overpass height.
Only about 0 vehicles cross daily — very light traffic with low congestion risk.
The deck is 24 feet wide with 1-2 lanes — a narrower crossing.
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
1974
52 years old
Structure Type
Prestressed Concrete (Continuous) Segmental Box Girder
Total Length
710 ft
216.4 m
Deck Width
24 ft
7.3 m
Spans
8
sections between supports
Max Span
111 ft
longest unsupported section (33.8 m)
Traffic Lanes
1 lane
One-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
0vehicles/day
43.15188°N, 77.60762°W
Prestressed Concrete (Continuous) Segmental Box Girder
A prestressed concrete box beam bridge combines hollow box sections with prestressing technology, enabling longer spans with reduced weight and material usage.
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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.