Fun fact: The average American crosses 4 bridges a day without even noticing.
Fun fact: The average American crosses 4 bridges a day without even noticing.
A bridge's favorite type of music? Heavy metal. Or suspension... it depends.
over DONNER SUMMIT
2.0 MI W DONNER LAKE
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 552 vehicles per day and is 101 years old (reconstructed in 1996).
Its sufficiency rating of 53.4 places it below the national average of 63.6.
For travelers with bridge anxiety
This bridge may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 241 feet long — a short crossing, about 10-15 seconds.
An arch bridge design with some openness to the surroundings.
No height data available — likely a standard overpass height.
Only about 552 vehicles cross daily — very light traffic with low congestion risk.
The deck is 27 feet wide with 1-2 lanes — a narrower crossing.
This bridge crosses over land, not water — no water views 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
1925
101 years old (rebuilt 1996)
Structure Type
Concrete Arch (Deck)
Total Length
241 ft
73.5 m
Deck Width
27 ft
8.1 m
Spans
1
sections between supports
Max Span
117 ft
longest unsupported section (35.7 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
552vehicles/day
39.31975°N, 120.31939°W
Concrete Arch (Deck)
A concrete arch bridge uses a curved concrete structure to transfer loads through compression. Concrete arches are durable and can be very aesthetically pleasing.
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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.