US Bridges

FM 110 over San Marcos River

Good

Hays County, Texas · 0.3 M. S of Int SH 80 · Structure no. 141060354502212

Built
2021
4 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
884 ft
1 main span
Daily traffic
2,761
2023 count
Owner
State
State Highway Agency

About this bridge

FM 110 over San Marcos River is a prestressed concrete stringer/multi-beam or girder carrying FM 110 over San Marcos River in Hays County, Texas. It was built in 2021, so it is 4 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 2,761 vehicles a day, roughly 17% of them trucks, projected to reach 1 by 1900. The structure is 884 ft (269.4 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM 110
CrossesSan Marcos River
Location0.3 M. S of Int SH 80
RouteState Highway 110
StateTexas
Coordinates29.861, -97.87897
Functional classUrban Minor 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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
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 spans1 (+6 approach)
Design loadHL 93
Structure length884 ft (269.4 m)
Longest span164 ft (50 m)
Deck width60 ft (18.3 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,761 (2023)
Projected traffic1 by 1900
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 FM 110 over San Marcos River built?

It was built in 2021, making it 4 years old in 2025.

What condition is FM 110 over San Marcos 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 November 2024.

How much traffic does FM 110 over San Marcos River carry?

About 2,761 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is FM 110 over San Marcos River?

The structure is 884 ft (269.4 m) long with a longest span of 164 ft (50 m) and a deck 60 ft wide.

Who owns FM 110 over San Marcos River?

It is owned by the State Highway Agency.