Structure 91100041802031 · Hill County, TX

SH 171 over Cottonwood Creek

Carries SH 171 over Cottonwood Creek, 3.2 Mi SE Of FM 308.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT180 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

180 ft end to end, longest span 20 ft: about 3 semi-trucks nose to tail. 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 slab bridge.

Built1940rebuilt 1966
Length180.1 ft54.9 m
Daily traffic3,307counted 2023
Last inspectedNovember 2024every 12 months

Location

StateTexas
CountyHill
Location3.2 Mi SE Of FM 308
CarriesSH 171
CrossesCottonwood Creek
Coordinates31.89476, -96.84781

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length180.1 ft (54.9 m)
Max Span20.0 ft (6.1 m)
Deck Width46.3 ft (14.1 m)
Deck Area774.1 sq m
Main Spans9
Year Built1940 (reconstructed 1966)

Traffic

Avg Daily Traffic3,307 (2023)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical2 — Bridge closed (monitoring)
Structure Number091100041802031

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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