Structure C 724 · Daggett County, UT

Us-191 (sr-191) over Flaming Gorge Dam Splway

Carries Us-191 (sr-191) over Flaming Gorge Dam Splway, Flaming Gorge Dam.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
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 FT618 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

618 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 multi-beam bridge.

Built196462 years old
Length618.4 ft188.5 m
Daily traffic1,715counted 2014
Last inspectedJuly 2023every 24 months

Location

StateUtah
CountyDaggett
LocationFlaming Gorge Dam
CarriesUs-191 (sr-191)
CrossesFlaming Gorge Dam Splway
Coordinates40.91468, -109.41988

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length618.4 ft (188.5 m)
Max Span47.9 ft (14.6 m)
Deck Width29.9 ft (9.1 m)
Deck Area1715.3 sq m
Main Spans1
Year Built1964

Traffic

Avg Daily Traffic1,715 (2014)
Truck Traffic41%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number0C 724

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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