Structure 20011 · Washington County, ID

Stc3878;old HWY 95 over Weiser River

Carries Stc3878;old HWY 95 over Weiser River, In Midvale.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT257 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

257 ft end to end, longest span 127 ft: about 4 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 multi-beam bridge.

Built199531 years old
Length256.9 ft78.3 m
Daily traffic820counted 2023
Last inspectedJuly 2022every 48 months

Location

StateIdaho
CountyWashington
LocationIn Midvale
CarriesStc3878;old HWY 95
CrossesWeiser River
Coordinates44.47061, -116.73264

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length256.9 ft (78.3 m)
Max Span127.0 ft (38.7 m)
Deck Width39.0 ft (11.9 m)
Deck Area931.8 sq m
Main Spans2
Year Built1995

Traffic

Avg Daily Traffic820 (2023)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2022
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000020011

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.

Nearby Bridges