US Bridges

Loop 306 WB Ml over South Concho River W Rel

Fair

Tom Green County, Texas · 1.05 MI W of US 87 · Structure no. 072260007708054

Built
1962
63 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
240 ft
6 main spans
Daily traffic
8,500
2013 count
Owner
State
State Highway Agency

About this bridge

Loop 306 WB Ml over South Concho River W Rel is a concrete stringer/multi-beam or girder carrying Loop 306 WB Ml over South Concho River W Rel in Tom Green County, Texas. It was built in 1962, so it is 63 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 8,500 vehicles a day, roughly 5% of them trucks, projected to reach 11,900 by 2033. The structure is 240 ft (73.2 m) long and 46 ft wide.

CarriesLoop 306 WB Ml
CrossesSouth Concho River W Rel
Location1.05 MI W of US 87
RouteState Highway 306
StateTexas
Coordinates31.40971, -100.45409
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
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 alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length240 ft (73.2 m)
Longest span40 ft (12.2 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,500 (2013)
Projected traffic11,900 by 2033
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Loop 306 WB Ml over South Concho River W Rel built?

It was built in 1962, making it 63 years old in 2025.

What condition is Loop 306 WB Ml over South Concho River W Rel 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 June 2024.

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

About 8,500 vehicles per day (2013 count), of which roughly 5% are trucks.

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

The structure is 240 ft (73.2 m) long with a longest span of 40 ft (12.2 m) and a deck 46 ft wide.

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

It is owned by the State Highway Agency.