US Bridges

FM 66 over Hackberry Creek

Fair

Hill County, Texas · 2.0 MI NE of SH 171 · Structure no. 091100059603025

Built
1949
76 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
75 ft
3 main spans
Daily traffic
269
2020 count
Owner
State
State Highway Agency

About this bridge

FM 66 over Hackberry Creek is a concrete slab carrying FM 66 over Hackberry Creek in Hill County, Texas. It was built in 1949, so it is 76 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 269 vehicles a day, roughly 3% of them trucks, projected to reach 264 by 2039. The structure is 75 ft (22.9 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM 66
CrossesHackberry Creek
Location2.0 MI NE of SH 171
RouteState Highway 66
CountyHill County
StateTexas
Coordinates32.11118, -97.16472
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating28 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length75 ft (22.9 m)
Longest span25 ft (7.6 m)
Deck width23 ft (7.1 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic269 (2020)
Projected traffic264 by 2039
Trucks3%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$500,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 66 over Hackberry Creek built?

It was built in 1949, making it 76 years old in 2025.

What condition is FM 66 over 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 January 2025.

How much traffic does FM 66 over Hackberry Creek carry?

About 269 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is FM 66 over Hackberry Creek?

The structure is 75 ft (22.9 m) long with a longest span of 25 ft (7.6 m) and a deck 23 ft wide.

Who owns FM 66 over Hackberry Creek?

It is owned by the State Highway Agency.