Structure 5985A0000000 · Pierce County, WA

Steele ST over SR 512

Carries Steele ST over SR 512, 0.6 E Jct I-5.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT139 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

139 ft end to end, longest span 65 ft. 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 slab bridge.

Built195967 years old
Length139.1 ft42.4 m
Daily traffic13,792counted 2020
Last inspectedJuly 2023every 24 months

Location

StateWashington
CountyPierce
Location0.6 E Jct I-5
CarriesSteele ST
CrossesSR 512
Coordinates47.15996, -122.46785

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length139.1 ft (42.4 m)
Max Span65.0 ft (19.8 m)
Deck Width34.1 ft (10.4 m)
Deck Area441.0 sq m
Main Spans2
Year Built1959

Traffic

Avg Daily Traffic13,792 (2020)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0005985A0000000

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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