US Bridges

FM 471 over Culebra Creek

Fair

Bexar County, Texas · 0.7 MI SE of Lp 1604 · Structure no. 150150084901024

Built
1991
34 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
340 ft
5 main spans
Daily traffic
33,644
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

FM 471 over Culebra Creek is a prestressed concrete stringer/multi-beam or girder carrying FM 471 over Culebra Creek in Bexar County, Texas. It was built in 1991, so it is 34 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 33,644 vehicles a day, roughly 4% of them trucks, projected to reach 54,240 by 2033. The structure is 340 ft (103.6 m) long and 78 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFM 471
CrossesCulebra Creek
Location0.7 MI SE of Lp 1604
RouteState Highway 471
CountyBexar County
StateTexas
Coordinates29.48967, -98.69442
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length340 ft (103.6 m)
Longest span68 ft (20.7 m)
Deck width78 ft (23.8 m)
Roadway width67 ft (20.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,644 (2020)
Projected traffic54,240 by 2033
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 471 over Culebra Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is FM 471 over Culebra Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does FM 471 over Culebra Creek carry?

About 33,644 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is FM 471 over Culebra Creek?

The structure is 340 ft (103.6 m) long with a longest span of 68 ft (20.7 m) and a deck 78 ft wide.

Who owns FM 471 over Culebra Creek?

It is owned by the City or Municipal Highway Agency.