US Bridges

FM 1770 over Antelope Creek

Good

Runnels County, Texas · 3.00 MI E of US 83 · Structure no. 072000173101002

Built
1955
70 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
35 ft
4 main spans
Daily traffic
24
2023 count
Owner
State
State Highway Agency

About this bridge

FM 1770 over Antelope Creek is a concrete culvert carrying FM 1770 over Antelope Creek in Runnels County, Texas. It was built in 1955, so it is 70 years old, older 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 24 vehicles a day, roughly 21% of them trucks, projected to reach 590 by 2033. The structure is 35 ft (10.7 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM 1770
CrossesAntelope Creek
Location3.00 MI E of US 83
RouteState Highway 1770
StateTexas
Coordinates31.96677, -99.91221
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
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 rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length35 ft (10.7 m)
Longest span8 ft (2.4 m)
Deck width43 ft (13.2 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2023)
Projected traffic590 by 2033
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1770 over Antelope Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is FM 1770 over Antelope 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 March 2024.

How much traffic does FM 1770 over Antelope Creek carry?

About 24 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is FM 1770 over Antelope Creek?

The structure is 35 ft (10.7 m) long with a longest span of 8 ft (2.4 m) and a deck 43 ft wide.

Who owns FM 1770 over Antelope Creek?

It is owned by the State Highway Agency.