US Bridges

IH 35 Sbfr over South San Gabriel River

Fair

Williamson County, Texas · 0.3 MI S of SH 29 · Structure no. 142460001508506

Built
2007
18 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
520 ft
3 main spans
Daily traffic
18,762
2021 count
Owner
State
State Highway Agency

About this bridge

IH 35 Sbfr over South San Gabriel River is a prestressed concrete stringer/multi-beam or girder carrying IH 35 Sbfr over South San Gabriel River in Williamson County, Texas. It was built in 2007, so it is 18 years old, younger 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 18,762 vehicles a day, roughly 4% of them trucks, projected to reach 26,267 by 2041. The structure is 520 ft (158.5 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 35 Sbfr
CrossesSouth San Gabriel River
Location0.3 MI S of SH 29
RouteState Highway 35
StateTexas
Coordinates30.62579, -97.69153
Functional classUrban Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length520 ft (158.5 m)
Longest span130 ft (39.6 m)
Deck width66 ft (20.1 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,762 (2021)
Projected traffic26,267 by 2041
Trucks4%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 IH 35 Sbfr over South San Gabriel River built?

It was built in 2007, making it 18 years old in 2025.

What condition is IH 35 Sbfr over South San Gabriel 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 February 2023.

How much traffic does IH 35 Sbfr over South San Gabriel River carry?

About 18,762 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is IH 35 Sbfr over South San Gabriel River?

The structure is 520 ft (158.5 m) long with a longest span of 130 ft (39.6 m) and a deck 66 ft wide.

Who owns IH 35 Sbfr over South San Gabriel River?

It is owned by the State Highway Agency.