US Bridges

IH 35 Sbfr over Blanco River

Fair

Hays County, Texas · 5.3 MI S of RM 150 · Structure no. 141060001602232

Built
2004
21 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
880 ft
7 main spans
Daily traffic
12,623
2023 count
Owner
State
State Highway Agency

About this bridge

IH 35 Sbfr over Blanco River is a prestressed concrete stringer/multi-beam or girder carrying IH 35 Sbfr over Blanco River in Hays County, Texas. It was built in 2004, so it is 21 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 12,623 vehicles a day, roughly 6% of them trucks, projected to reach 17,672 by 2042. The structure is 880 ft (268.2 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 35 Sbfr
CrossesBlanco River
Location5.3 MI S of RM 150
RouteInterstate 35
StateTexas
Coordinates29.91239, -97.89869
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
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 adequacy7: Better than 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 spans7 (+2 approach)
Design loadHS 20
Structure length880 ft (268.2 m)
Longest span120 ft (36.6 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,623 (2023)
Projected traffic17,672 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 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 Blanco River built?

It was built in 2004, making it 21 years old in 2025.

What condition is IH 35 Sbfr over Blanco 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 August 2024.

How much traffic does IH 35 Sbfr over Blanco River carry?

About 12,623 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is IH 35 Sbfr over Blanco River?

The structure is 880 ft (268.2 m) long with a longest span of 120 ft (36.6 m) and a deck 38 ft wide.

Who owns IH 35 Sbfr over Blanco River?

It is owned by the State Highway Agency.