Structure 150150084901017 · Bexar County, TX

FM 471 over Drain

Carries FM 471 over Drain, 1.74 Mi SW Of SH 16.

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 FT54 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 54 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.

Built198937 years old
Length54.1 ft16.5 m
Daily traffic18,674counted 2015
Last inspectedJune 2023every 24 months

Location

StateTexas
CountyBexar
Location1.74 Mi SW Of SH 16
CarriesFM 471
CrossesDrain
Coordinates29.47873, -98.64022

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length54.1 ft (16.5 m)
Max Span8.9 ft (2.7 m)
Deck Area331.6 sq m
Main Spans5
Year Built1989

Traffic

Avg Daily Traffic18,674 (2015)
Truck Traffic4%
Lanes On Bridge5

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number150150084901017

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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