US Bridges

SH 80 over Blanco River

Good

Hays County, Texas · 0.7 MI E of IH 35 · Structure no. 141060028601016

Built
1990
35 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
625 ft
6 main spans
Daily traffic
38,510
2023 count
Owner
State
State Highway Agency

About this bridge

SH 80 over Blanco River is a prestressed concrete stringer/multi-beam or girder carrying SH 80 over Blanco River in Hays County, Texas. It was built in 1990, so it is 35 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 38,510 vehicles a day, roughly 6% of them trucks, projected to reach 50,063 by 2042. The structure is 625 ft (190.5 m) long and 91 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesSH 80
CrossesBlanco River
Location0.7 MI E of IH 35
RouteState Highway 80
StateTexas
Coordinates29.87957, -97.91063
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal 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 spans6 (+2 approach)
Design loadHS 20
Structure length625 ft (190.5 m)
Longest span95 ft (29 m)
Deck width91 ft (27.7 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,510 (2023)
Projected traffic50,063 by 2042
Trucks6%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 SH 80 over Blanco River built?

It was built in 1990, making it 35 years old in 2025.

What condition is SH 80 over Blanco River 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 September 2024.

How much traffic does SH 80 over Blanco River carry?

About 38,510 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SH 80 over Blanco River?

The structure is 625 ft (190.5 m) long with a longest span of 95 ft (29 m) and a deck 91 ft wide.

Who owns SH 80 over Blanco River?

It is owned by the State Highway Agency.