The average US bridge is 48 years old. That's a lot of birthday candles.
The average US bridge is 48 years old. That's a lot of birthday candles.
If I had a dime for every bridge I've crossed, I'd have about ten bucks by now.
over SACRAMENTO RIVER
1.7 MI E/O SR 273
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 21,320 vehicles per day and is 29 years old.
Its sufficiency rating of 61.4 places it below the national average of 63.6.
The NBI records a navigation clearance of 200 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 445 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
About 200 feet above ground — a very high bridge with panoramic views.
About 21,320 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 43 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
1997
29 years old
Structure Type
Prestressed Concrete (Continuous) Stringer/Multi-beam/Girder
Total Length
445 ft
135.6 m
Deck Width
43 ft
13.0 m
Spans
4
sections between supports
Max Span
112 ft
longest unsupported section (34.0 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
200 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
21,320vehicles/day
40.53839°N, 122.35831°W
Prestressed Concrete (Continuous) Stringer/Multi-beam/Girder
A prestressed concrete stringer bridge uses pretensioned concrete beams, where steel tendons are stretched before concrete is poured. This creates stronger, lighter spans.
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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.