US Bridges

FM 2504 over Siestedero Creek

Good

Atascosa County, Texas · 2.4 MI NE of SH 173 · Structure no. 150070173802005

Built
2004
21 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete Continuous
Length
200 ft
8 main spans
Daily traffic
975
2020 count
Owner
State
State Highway Agency

About this bridge

FM 2504 over Siestedero Creek is a concrete continuous slab carrying FM 2504 over Siestedero Creek in Atascosa County, Texas. It was built in 2004, so it is 21 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 975 vehicles a day, roughly 23% of them trucks, projected to reach 510 by 2033. The structure is 200 ft (61 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFM 2504
CrossesSiestedero Creek
Location2.4 MI NE of SH 173
RouteState Highway 2504
StateTexas
Coordinates29.05061, -98.76463
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length200 ft (61 m)
Longest span25 ft (7.6 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic975 (2020)
Projected traffic510 by 2033
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 2504 over Siestedero Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is FM 2504 over Siestedero Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does FM 2504 over Siestedero Creek carry?

About 975 vehicles per day (2020 count), of which roughly 23% are trucks.

How long is FM 2504 over Siestedero Creek?

The structure is 200 ft (61 m) long with a longest span of 25 ft (7.6 m) and a deck 36 ft wide.

Who owns FM 2504 over Siestedero Creek?

It is owned by the State Highway Agency.