Structure 141570007103059 · Mason County, TX

US 87 over Comanche Creek

Carries US 87 over Comanche Creek, 0.05 Mi N Of US 377.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT150 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

150 ft end to end, longest span 25 ft: about 2 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.

Built1949rebuilt 1961
Length149.9 ft45.7 m
Daily traffic2,407counted 2023
Last inspectedJune 2023every 24 months

Location

StateTexas
CountyMason
Location0.05 Mi N Of US 377
CarriesUS 87
CrossesComanche Creek
Coordinates30.76429, -99.24593

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length149.9 ft (45.7 m)
Max Span24.9 ft (7.6 m)
Deck Width47.9 ft (14.6 m)
Deck Area667.2 sq m
Main Spans6
Year Built1949 (reconstructed 1961)

Traffic

Avg Daily Traffic2,407 (2023)
Truck Traffic18%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number141570007103059

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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