US Bridges

Loop 306 SB over FM 388

Good

Tom Green County, Texas · FM 388 at Sl 306 Intersec · Structure no. 072260026407257

Built
2011
14 years old
Condition
Good
inspected July 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
1 main span
Daily traffic
2,750
2013 count
Owner
State
State Highway Agency

About this bridge

Loop 306 SB over FM 388 is a prestressed concrete stringer/multi-beam or girder carrying Loop 306 SB over FM 388 in Tom Green County, Texas. It was built in 2011, so it is 14 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 2,750 vehicles a day, roughly 10% of them trucks, projected to reach 3,850 by 2033. The structure is 180 ft (54.9 m) long and 40 ft wide.

CarriesLoop 306 SB
CrossesFM 388
LocationFM 388 at Sl 306 Intersec
RouteState Highway 306
StateTexas
Coordinates31.443, -100.37606
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadHL 93
Structure length180 ft (54.9 m)
Longest span90 ft (27.4 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,750 (2013)
Projected traffic3,850 by 2033
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Loop 306 SB over FM 388 built?

It was built in 2011, making it 14 years old in 2025.

What condition is Loop 306 SB over FM 388 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 2022.

How much traffic does Loop 306 SB over FM 388 carry?

About 2,750 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is Loop 306 SB over FM 388?

The structure is 180 ft (54.9 m) long with a longest span of 90 ft (27.4 m) and a deck 40 ft wide.

Who owns Loop 306 SB over FM 388?

It is owned by the State Highway Agency.