US Bridges

FM 485 over Hart Creek

Fair

Milam County, Texas · 3.95 MI E of FM 979 · Structure no. 171660026201048

Built
1978
47 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
160 ft
4 main spans
Daily traffic
3,268
2023 count
Owner
State
State Highway Agency

About this bridge

FM 485 over Hart Creek is a concrete stringer/multi-beam or girder carrying FM 485 over Hart Creek in Milam County, Texas. It was built in 1978, so it is 47 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 3,268 vehicles a day, roughly 22% of them trucks, projected to reach 5,294 by 2042. The structure is 160 ft (48.8 m) long and 42 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesFM 485
CrossesHart Creek
Location3.95 MI E of FM 979
RouteState Highway 485
CountyMilam County
StateTexas
Coordinates30.89025, -96.82477
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 inspectionSeptember 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,268 (2023)
Projected traffic5,294 by 2042
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 485 over Hart Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is FM 485 over Hart 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 485 over Hart Creek carry?

About 3,268 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is FM 485 over Hart Creek?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.

Who owns FM 485 over Hart Creek?

It is owned by the State Highway Agency.