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Crunching the numbers on America's infrastructure...
over KILCHIS RIVER
0030 EAST ON ALDERBROOK
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 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 2,546 vehicles per day and is 37 years old.
Its sufficiency rating of 65.4 is above 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 173 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
No height data available — likely a standard overpass height.
About 2,546 vehicles cross daily — light traffic, a smooth crossing.
The deck is 36 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
1989
37 years old
Structure Type
Prestressed Concrete Tee Beam
Total Length
173 ft
52.7 m
Deck Width
36 ft
11.0 m
Spans
1
sections between supports
Max Span
136 ft
longest unsupported section (41.5 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
2,546vehicles/day
45.49632°N, 123.84421°W
Prestressed Concrete Tee Beam
A prestressed concrete tee beam bridge combines the T-shaped cross-section with prestressing technology for improved load capacity and longer 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.