Structure 26393 · Ada County, ID

E. Branchwood over Squaw Creek

Carries E. Branchwood over Squaw Creek, In Boise.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

24 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 rigid-frame bridge.

Built200125 years old
Length24.0 ft7.3 m
Daily traffic400counted 2023
Last inspectedMarch 2021every 48 months

Location

StateIdaho
CountyAda
LocationIn Boise
CarriesE. Branchwood
CrossesSquaw Creek
Coordinates43.57278, -116.11944

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length24.0 ft (7.3 m)
Max Span24.0 ft (7.3 m)
Deck Width44.9 ft (13.7 m)
Deck Area100.0 sq m
Main Spans1
Year Built2001

Traffic

Avg Daily Traffic400 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number000000000026393

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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