Structure 5258A0000000 · Spokane County, WA

Maple Street over Spokane River

Carries Maple Street over Spokane River, 0.4 N SR 90.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,719 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

1,719 ft end to end, longest span 151 ft: about 4.8 football fields. 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.

Built1958rebuilt 1994
Length1718.8 ft523.9 m
Daily traffic39,775counted 2022
Last inspectedMay 2024every 24 months

Location

StateWashington
CountySpokane
Location0.4 N SR 90
CarriesMaple Street
CrossesSpokane River
Coordinates47.65937, -117.43493

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length1718.8 ft (523.9 m)
Max Span150.9 ft (46 m)
Deck Width59.4 ft (18.1 m)
Deck Area9482.6 sq m
Main Spans14
Year Built1958 (reconstructed 1994)

Traffic

Avg Daily Traffic39,775 (2022)
Truck Traffic2%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number0005258A0000000

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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