US Bridges

FM 1878 over Carrizo Creek

Fair

Nacogdoches County, Texas · 2.6 MI NE of Loop 224 · Structure no. 111740181001004

Built
1956
69 years old, rebuilt 1987
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
100 ft
4 main spans
Daily traffic
1,173
2022 count
Owner
State
State Highway Agency

About this bridge

FM 1878 over Carrizo Creek is a concrete slab carrying FM 1878 over Carrizo Creek in Nacogdoches County, Texas. It was built in 1956 and reconstructed in 1987, so it is 69 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 1,173 vehicles a day, roughly 10% of them trucks, projected to reach 1,642 by 2042. The structure is 100 ft (30.5 m) long and 42 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesFM 1878
CrossesCarrizo Creek
Location2.6 MI NE of Loop 224
RouteState Highway 1878
StateTexas
Coordinates31.65228, -94.57976
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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length100 ft (30.5 m)
Longest span25 ft (7.6 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,173 (2022)
Projected traffic1,642 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 1878 over Carrizo Creek built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1987.

What condition is FM 1878 over Carrizo 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 1878 over Carrizo Creek carry?

About 1,173 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is FM 1878 over Carrizo Creek?

The structure is 100 ft (30.5 m) long with a longest span of 25 ft (7.6 m) and a deck 42 ft wide.

Who owns FM 1878 over Carrizo Creek?

It is owned by the State Highway Agency.