US Bridges

FM 343 over Loco Creek

Fair

Nacogdoches County, Texas · 4.00 MI NW of US 59 · Structure no. 111740230001001

Built
1958
67 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
140 ft
3 main spans
Daily traffic
1,144
2024 count
Owner
State
State Highway Agency

About this bridge

FM 343 over Loco Creek is a concrete continuous slab carrying FM 343 over Loco Creek in Nacogdoches County, Texas. It was built in 1958, so it is 67 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 1,144 vehicles a day, roughly 5% of them trucks, projected to reach 1,351 by 2040. The structure is 140 ft (42.7 m) long and 25 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesFM 343
CrossesLoco Creek
Location4.00 MI NW of US 59
RouteState Highway 343
StateTexas
Coordinates31.68851, -94.75346
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating28 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadOther
Structure length140 ft (42.7 m)
Longest span40 ft (12.2 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,144 (2024)
Projected traffic1,351 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$8,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 343 over Loco Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is FM 343 over Loco 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 March 2024.

How much traffic does FM 343 over Loco Creek carry?

About 1,144 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is FM 343 over Loco Creek?

The structure is 140 ft (42.7 m) long with a longest span of 40 ft (12.2 m) and a deck 25 ft wide.

Who owns FM 343 over Loco Creek?

It is owned by the State Highway Agency.