Structure 26270 · Ada County, ID

Stc3928;s Eagle RD over Mason Creek Feeder Canal

Carries Stc3928;s Eagle RD over Mason Creek Feeder Canal, 0.4 N. 3.3 E. Kuna.

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
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT35 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

35 ft end to end. Lengths and the car 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 rigid-frame bridge.

Built199036 years old
Length35.1 ft10.7 m
Daily traffic570counted 2023
Last inspectedOctober 2024every 48 months

Location

StateIdaho
CountyAda
Location0.4 N. 3.3 E. Kuna
CarriesStc3928;s Eagle RD
CrossesMason Creek Feeder Canal
Coordinates43.49861, -116.35444

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length35.1 ft (10.7 m)
Max Span35.1 ft (10.7 m)
Deck Width35.1 ft (10.7 m)
Deck Area114.5 sq m
Main Spans1
Year Built1990

Traffic

Avg Daily Traffic570 (2023)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000026270

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