US Bridges

FM 434 over Tributary of Flat Creek

Fair

McLennan County, Texas · 1.5 MI SE of FM 3400 · Structure no. 091610083304045

Built
1982
43 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
1,825
2023 count
Owner
State
State Highway Agency

About this bridge

FM 434 over Tributary of Flat Creek is a concrete culvert carrying FM 434 over Tributary of Flat Creek in McLennan County, Texas. It was built in 1982, so it is 43 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 1,825 vehicles a day, roughly 10% of them trucks, projected to reach 2,555 by 2042. The structure is 29 ft (8.8 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM 434
CrossesTributary of Flat Creek
Location1.5 MI SE of FM 3400
RouteState Highway 434
CountyMcLennan County
StateTexas
Coordinates31.50912, -97.07417
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span9 ft (2.7 m)
Deck width35 ft (10.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,825 (2023)
Projected traffic2,555 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 434 over Tributary of Flat Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is FM 434 over Tributary of Flat 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 November 2024.

How much traffic does FM 434 over Tributary of Flat Creek carry?

About 1,825 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is FM 434 over Tributary of Flat Creek?

The structure is 29 ft (8.8 m) long with a longest span of 9 ft (2.7 m) and a deck 35 ft wide.

Who owns FM 434 over Tributary of Flat Creek?

It is owned by the State Highway Agency.