US Bridges

CR 3124 over Cobb Creek

FairPosted for load

Hill County, Texas · 3.45 MI W of SH 171 · Structure no. 091100AA0232001

Built
1935
90 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
44 ft
2 main spans
Daily traffic
60
2011 count
Owner
County
County Highway Agency

About this bridge

CR 3124 over Cobb Creek is a concrete slab carrying CR 3124 over Cobb Creek in Hill County, Texas. It was built in 1935, so it is 90 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 60 vehicles a day, projected to reach 70 by 2031. The structure is 44 ft (13.4 m) long and 23 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCR 3124
CrossesCobb Creek
Location3.45 MI W of SH 171
RouteCounty Highway 3124
CountyHill County
StateTexas
Coordinates31.97309, -97.0518
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span21 ft (6.4 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2011)
Projected traffic70 by 2031
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$208,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 3124 over Cobb Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is CR 3124 over Cobb 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 2024.

How much traffic does CR 3124 over Cobb Creek carry?

About 60 vehicles per day (2011 count).

How long is CR 3124 over Cobb Creek?

The structure is 44 ft (13.4 m) long with a longest span of 21 ft (6.4 m) and a deck 23 ft wide.

Who owns CR 3124 over Cobb Creek?

It is owned by the County Highway Agency.