Structure 141570007105050 · Mason County, TX

US 87 over Gersdorf Creek

Carries US 87 over Gersdorf Creek, 10.6 Mi SE Of RM 152.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT50 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 50 ft across with 4 openings. 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, so those are drawn as typical for a culvert.

Built194581 years old
Length49.9 ft15.2 m
Daily traffic2,995counted 2020
Last inspectedJune 2023every 24 months

Location

StateTexas
CountyMason
Location10.6 Mi SE Of RM 152
CarriesUS 87
CrossesGersdorf Creek
Coordinates30.51366, -99.01302

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length49.9 ft (15.2 m)
Max Span7.9 ft (2.4 m)
Deck Width44.6 ft (13.6 m)
Deck Area206.7 sq m
Main Spans4
Year Built1945

Traffic

Avg Daily Traffic2,995 (2020)
Truck Traffic19%
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 Number141570007105050

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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