US Bridges

Loop 306 EB over S Concho RD and River

Fair

Tom Green County, Texas · 0.65 MI W of US 87 · Structure no. 072260007708061

Built
1972
53 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
802 ft
3 main spans
Daily traffic
8,500
2013 count
Owner
State
State Highway Agency

About this bridge

Loop 306 EB over S Concho RD and River is a steel continuous stringer/multi-beam or girder carrying Loop 306 EB over S Concho RD and River in Tom Green County, Texas. It was built in 1972, so it is 53 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 802 ft (244.5 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLoop 306 EB
CrossesS Concho RD and River
Location0.65 MI W of US 87
RouteState Highway 306
StateTexas
Coordinates31.40794, -100.449
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+14 approach)
Design loadHS 20
Structure length802 ft (244.5 m)
Longest span90 ft (27.4 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 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
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
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 EB over S Concho RD and River built?

It was built in 1972, making it 53 years old in 2025.

What condition is Loop 306 EB over S Concho RD and River 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 EB over S Concho RD and River carry?

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

How long is Loop 306 EB over S Concho RD and River?

The structure is 802 ft (244.5 m) long with a longest span of 90 ft (27.4 m) and a deck 44 ft wide.

Who owns Loop 306 EB over S Concho RD and River?

It is owned by the State Highway Agency.