US Bridges

Loop 306 WB FR over South Concho River W Rel

Good

Tom Green County, Texas · 1.05 MI W of US 87 · Structure no. 072260007708075

Built
1982
43 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
46 ft
6 main spans
Daily traffic
1,102
2019 count
Owner
State
State Highway Agency

About this bridge

Loop 306 WB FR over South Concho River W Rel is a concrete culvert carrying Loop 306 WB FR over South Concho River W Rel in Tom Green County, Texas. It was built in 1982, so it is 43 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 1,102 vehicles a day, roughly 5% of them trucks, projected to reach 3,010 by 2031. The structure is 46 ft (14 m) long and 86 ft wide.

CarriesLoop 306 WB FR
CrossesSouth Concho River W Rel
Location1.05 MI W of US 87
RouteState Highway 306
StateTexas
Coordinates31.41004, -100.45414
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length46 ft (14 m)
Longest span7 ft (2.1 m)
Deck width86 ft (26.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,102 (2019)
Projected traffic3,010 by 2031
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed—
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 Loop 306 WB FR over South Concho River W Rel built?

It was built in 1982, making it 43 years old in 2025.

What condition is Loop 306 WB FR over South Concho River W Rel 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 July 2024.

How much traffic does Loop 306 WB FR over South Concho River W Rel carry?

About 1,102 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Loop 306 WB FR over South Concho River W Rel?

The structure is 46 ft (14 m) long with a longest span of 7 ft (2.1 m) and a deck 86 ft wide.

Who owns Loop 306 WB FR over South Concho River W Rel?

It is owned by the State Highway Agency.