US Bridges

FM 20 over West Fork Plum Creek

Fair

Caldwell County, Texas · 5.3 MI SW of US 183 · Structure no. 140280011502012

Built
1955
70 years old, rebuilt 1990
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
2,228
2023 count
Owner
State
State Highway Agency

About this bridge

FM 20 over West Fork Plum Creek is a concrete culvert carrying FM 20 over West Fork Plum Creek in Caldwell County, Texas. It was built in 1955 and reconstructed in 1990, 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 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 2,228 vehicles a day, roughly 4% of them trucks, projected to reach 3,743 by 2042. The structure is 43 ft (13.1 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM 20
CrossesWest Fork Plum Creek
Location5.3 MI SW of US 183
RouteState Highway 20
StateTexas
Coordinates29.81988, -97.73291
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width42 ft (12.9 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,228 (2023)
Projected traffic3,743 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 20 over West Fork Plum Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1990.

What condition is FM 20 over West Fork Plum 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 October 2024.

How much traffic does FM 20 over West Fork Plum Creek carry?

About 2,228 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is FM 20 over West Fork Plum Creek?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m) and a deck 42 ft wide.

Who owns FM 20 over West Fork Plum Creek?

It is owned by the State Highway Agency.