I-5 over Nisqually River

Fair Condition59 years old62,815 vehicles/day

Location

StateWashington
CountyThurston
Location2.9 N Jct SR 510
CarriesI-5
CrossesNisqually River
Coordinates47.07154, -122.70494

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Channel/Waterway4 (Poor)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length431.1 ft (131.4 m)
Max Span321.9 ft (98.1 m)
Deck Width52.5 ft (16 m)
Deck Area2102.4 sq m
Main Spans1
Year Built1967

Traffic

Avg Daily Traffic62,815 (2023)
Truck Traffic12%
Lanes On Bridge3

Inspection & Ownership

Last Inspection423
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number0008116A0000000

Nearby Bridges

I-5 over Nisqually River 0.0 mi Fair I-5 over Nisqually Overflow-south 0.3 mi Fair I-5 over Nisqually Overflow 0.3 mi Fair I-5 over Nisqually Overflow 0.5 mi Fair Nisqually RD SW over Bnsf Railroad Overpass 0.5 mi Good Nisqually Cutoff over Overflow Channel 0.5 mi Fair I-5 over Nisqually Overflow 0.5 mi Fair I-5 S-e Ramp over I-5 Mainline 0.5 mi Fair I-5 over Mcallister CR 0.7 mi Good I-5 over Mcallister Creek 0.8 mi Fair