Structure 85121000000000 · Pierce County, WA

Tacoma Avenue So over Nprr &so Tacoma Way

Carries Tacoma Avenue So over Nprr &so Tacoma Way, 0.1 N I-5 Undercrossing.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT333 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

333 ft end to end, longest span 94 ft: about 5 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a girder bridge.

Built1930rebuilt 2016
Length333.0 ft101.5 m
Daily traffic10,550counted 2023
Last inspectedJune 2024every 24 months

Location

StateWashington
CountyPierce
Location0.1 N I-5 Undercrossing
CarriesTacoma Avenue So
CrossesNprr &so Tacoma Way
Coordinates47.23213, -122.44077

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length333.0 ft (101.5 m)
Max Span94.2 ft (28.7 m)
Deck Width58.4 ft (17.8 m)
Deck Area1806.7 sq m
Main Spans6
Year Built1930 (reconstructed 2016)

Traffic

Avg Daily Traffic10,550 (2023)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge3

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number085121000000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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