US Bridges

FM 3129 over Line Creek

Fair

Cass County, Texas · 2.30 MI N of SH 77 · Structure no. 190340198901003

Built
1976
49 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
815
2020 count
Owner
State
State Highway Agency

About this bridge

FM 3129 over Line Creek is a concrete culvert carrying FM 3129 over Line Creek in Cass County, Texas. It was built in 1976, so it is 49 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 5 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 815 vehicles a day, roughly 14% of them trucks, projected to reach 1,890 by 2033. The structure is 43 ft (13.1 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 3129
CrossesLine Creek
Location2.30 MI N of SH 77
RouteState Highway 3129
CountyCass County
StateTexas
Coordinates33.08387, -94.06079
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 loadHS 20
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic815 (2020)
Projected traffic1,890 by 2033
Trucks14%
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 3129 over Line Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is FM 3129 over Line 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 September 2024.

How much traffic does FM 3129 over Line Creek carry?

About 815 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is FM 3129 over Line Creek?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m) and a deck 35 ft wide.

Who owns FM 3129 over Line Creek?

It is owned by the State Highway Agency.