Why did the truss bridge break up with the beam bridge? It needed more support.
Why did the truss bridge break up with the beam bridge? It needed more support.
If I had a dime for every bridge I've crossed, I'd have about ten bucks by now.
over Herman Creek Conn
2.3 MI E OF CASCADE LOCKS
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This bridge has a Fair overall condition rating of 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 24,286 vehicles per day and is 61 years old (reconstructed in 2009).
Its sufficiency rating of 66.3 is above the national average of 63.6.
The NBI records a navigation clearance of 16 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 is likely to be a comfortable crossing for most travelers.
This bridge is 123 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
About 16 feet above ground — standard overpass height.
About 24,286 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 78 feet wide with multiple lanes — easy to stay in a center lane.
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
1965
61 years old (rebuilt 2009)
Structure Type
Concrete (Continuous) Stringer/Multi-beam/Girder
Total Length
123 ft
37.5 m
Deck Width
78 ft
23.8 m
Spans
3
sections between supports
Max Span
45 ft
longest unsupported section (13.7 m)
Traffic Lanes
4 lanes
Two-way traffic
Clearance Below
16 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
24,286vehicles/day
45.68970°N, 121.83860°W
Concrete (Continuous) Stringer/Multi-beam/Girder
A concrete stringer bridge uses reinforced concrete beams running parallel to traffic. It combines the durability of concrete with efficient beam-based load distribution.
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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.