Structure 32240098205008 · Throckmorton County, TX

FM 923 over Brush Knob Creek

Carries FM 923 over Brush Knob Creek, 1.7 Mi N Of US 183.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT52 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 4/9 · sets the rating

52 ft end to end, longest span 13 ft. 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 slab bridge.

Built194878 years old
Length52.2 ft15.9 m
Daily traffic100counted 2020
Last inspectedOctober 2023every 24 months

Location

StateTexas
CountyThrockmorton
Location1.7 Mi N Of US 183
CarriesFM 923
CrossesBrush Knob Creek
Coordinates33.09437, -99.14292

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length52.2 ft (15.9 m)
Max Span13.1 ft (4 m)
Deck Width25.3 ft (7.7 m)
Deck Area122.4 sq m
Main Spans4
Year Built1948

Traffic

Avg Daily Traffic100 (2020)
Truck Traffic24%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure Number032240098205008

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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