Structure 13618 · Twin Falls County, ID

US 30 over Cedar Creek Draw

Carries US 30 over Cedar Creek Draw, 1.1 W. Filer.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT80 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

80 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 multi-beam bridge.

Built200224 years old
Length80.1 ft24.4 m
Daily traffic5,900counted 2023
Last inspectedMarch 2024every 48 months

Location

StateIdaho
CountyTwin Falls
Location1.1 W. Filer
CarriesUS 30
CrossesCedar Creek Draw
Coordinates42.57247, -114.63142

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length80.1 ft (24.4 m)
Max Span77.1 ft (23.5 m)
Deck Width42.0 ft (12.8 m)
Deck Area312.3 sq m
Main Spans1
Year Built2002

Traffic

Avg Daily Traffic5,900 (2023)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000013618

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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