US Bridges

FM 804 over Alligator Creek

Good

Henderson County, Texas · 2.85 MI NE of US 175 · Structure no. 101080110001004

Built
1991
34 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
122 ft
4 main spans
Daily traffic
653
2020 count
Owner
State
State Highway Agency

About this bridge

FM 804 over Alligator Creek is a concrete stringer/multi-beam or girder carrying FM 804 over Alligator Creek in Henderson County, Texas. It was built in 1991, so it is 34 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 653 vehicles a day, roughly 13% of them trucks, projected to reach 690 by 2033. The structure is 122 ft (37.2 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM 804
CrossesAlligator Creek
Location2.85 MI NE of US 175
RouteState Highway 804
CountyHenderson County
StateTexas
Coordinates32.16433, -95.71931
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span30 ft (9.1 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic653 (2020)
Projected traffic690 by 2033
Trucks13%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 804 over Alligator Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is FM 804 over Alligator Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does FM 804 over Alligator Creek carry?

About 653 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is FM 804 over Alligator Creek?

The structure is 122 ft (37.2 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.

Who owns FM 804 over Alligator Creek?

It is owned by the State Highway Agency.