US Bridges

FM 3487 over Culebra Creek

Fair

Bexar County, Texas · 0.12 MI S of FM 471 · Structure no. 150150210402008

Built
1987
38 years old, rebuilt 2009
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
400 ft
16 main spans
Daily traffic
33,568
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

FM 3487 over Culebra Creek is a concrete slab carrying FM 3487 over Culebra Creek in Bexar County, Texas. It was built in 1987 and reconstructed in 2009, so it is 38 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 33,568 vehicles a day, roughly 1% of them trucks, projected to reach 36,400 by 2031. The structure is 400 ft (121.9 m) long and 106 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM 3487
CrossesCulebra Creek
Location0.12 MI S of FM 471
RouteState Highway 3487
CountyBexar County
StateTexas
Coordinates29.48249, -98.66732
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans16
Design loadHS 20
Structure length400 ft (121.9 m)
Longest span25 ft (7.6 m)
Deck width106 ft (32.3 m)
Roadway width91 ft (27.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,568 (2020)
Projected traffic36,400 by 2031
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 3487 over Culebra Creek built?

It was built in 1987, making it 38 years old in 2025. It was reconstructed in 2009.

What condition is FM 3487 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 3487 over Culebra Creek carry?

About 33,568 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is FM 3487 over Culebra Creek?

The structure is 400 ft (121.9 m) long with a longest span of 25 ft (7.6 m) and a deck 106 ft wide.

Who owns FM 3487 over Culebra Creek?

It is owned by the City or Municipal Highway Agency.