Almost there! Just bridging the gap...
Almost there! Just bridging the gap...
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
over S TACOMA WAY/STRR/CENTER
WB NALLEY VALLEY
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Good overall condition rating of 8 out of 9. It is in good structural condition and is not classified as structurally deficient.
The bridge carries 39,113 vehicles per day and is 15 years old.
Its sufficiency rating of 79.0 is above the national average of 63.6.
The NBI records a navigation clearance of 65 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 2140 feet long — a longer crossing, over 1 minute.
A standard overpass design with solid barriers on each side.
About 65 feet above ground — an elevated crossing, similar to a 5-10 story building.
About 39,113 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 50 feet wide with 3-4 lanes — standard width.
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
2011
15 years old
Structure Type
Prestressed Concrete (Continuous) Stringer/Multi-beam/Girder
Total Length
2,140 ft
652.3 m
Deck Width
50 ft
15.2 m
Spans
14
sections between supports
Max Span
160 ft
longest unsupported section (48.8 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
65 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
39,113vehicles/day
47.23144°N, 122.45814°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.