Structure 112030039001063 · San Augustine County, TX

SH 147 over Ayish Bayou

Carries SH 147 over Ayish Bayou, 0.95 Mi N Of US 96.

Overall conditionFair

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

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT62 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 62 ft across with 5 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.

Built197551 years old
Length62.0 ft18.9 m
Daily traffic863counted 2020
Last inspectedMay 2024every 24 months

Location

StateTexas
CountySan Augustine
Location0.95 Mi N Of US 96
CarriesSH 147
CrossesAyish Bayou
Coordinates31.52298, -94.11869

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length62.0 ft (18.9 m)
Max Span9.8 ft (3 m)
Deck Width50.2 ft (15.3 m)
Deck Area289.2 sq m
Main Spans5
Year Built1975

Traffic

Avg Daily Traffic863 (2020)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number112030039001063

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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