US Bridges

FM 66 over Br of Hackberry Creek

Fair

Hill County, Texas · 2.1 MI SW of US 81 · Structure no. 091100059603048

Built
1975
50 years old, rebuilt 2003
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
116
2020 count
Owner
State
State Highway Agency

About this bridge

FM 66 over Br of Hackberry Creek is a concrete culvert carrying FM 66 over Br of Hackberry Creek in Hill County, Texas. It was built in 1975 and reconstructed in 2003, so it is 50 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 116 vehicles a day, roughly 1% of them trucks, projected to reach 121 by 2039. The structure is 33 ft (10.1 m) long and 57 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM 66
CrossesBr of Hackberry Creek
Location2.1 MI SW of US 81
RouteState Highway 66
CountyHill County
StateTexas
Coordinates32.13642, -97.16525
Functional classRural Minor 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width57 ft (17.5 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic116 (2020)
Projected traffic121 by 2039
Trucks1%
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 statusPossibly eligible for the National Register; requires further investigation
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 66 over Br of Hackberry Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2003.

What condition is FM 66 over Br of Hackberry 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 February 2023.

How much traffic does FM 66 over Br of Hackberry Creek carry?

About 116 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is FM 66 over Br of Hackberry Creek?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 57 ft wide.

Who owns FM 66 over Br of Hackberry Creek?

It is owned by the State Highway Agency.