Structure C 489 · Garfield County, UT

Sr-95 over Dirty Devil River

Carries Sr-95 over Dirty Devil River, 3.2 Mi.w.hite Marina Road.

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 FT625 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

625 ft end to end: about 1.7 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 deck arch.

Built196561 years old
Length625.0 ft190.5 m
Daily traffic301counted 2022
Last inspectedOctober 2022every 24 months

Location

StateUtah
CountyGarfield
Location3.2 Mi.w.hite Marina Road
CarriesSr-95
CrossesDirty Devil River
Coordinates37.91666, -110.38816

Physical Characteristics

MaterialSteel
DesignArch - Deck
Total Length625.0 ft (190.5 m)
Max Span419.9 ft (128 m)
Deck Width31.5 ft (9.6 m)
Deck Area1828.8 sq m
Main Spans1
Year Built1965

Traffic

Avg Daily Traffic301 (2022)
Truck Traffic40%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical9 — Foundation above flood level
Structure Number0C 489

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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