US Bridges

FM 2091 over San Marcos River

Fair

Gonzales County, Texas · 0.40 MI SW of FM 1586 · Structure no. 130900208001005

Built
1960
65 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
382 ft
3 main spans
Daily traffic
473
2020 count
Owner
State
State Highway Agency

About this bridge

FM 2091 over San Marcos River is a steel continuous stringer/multi-beam or girder carrying FM 2091 over San Marcos River in Gonzales County, Texas. It was built in 1960, so it is 65 years old, older 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 473 vehicles a day, roughly 22% of them trucks, projected to reach 420 by 2033. The structure is 382 ft (116.3 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFM 2091
CrossesSan Marcos River
Location0.40 MI SW of FM 1586
RouteState Highway 2091
CountyGonzales County
StateTexas
Coordinates29.59256, -97.58796
Functional classRural Minor 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+5 approach)
Design loadOther
Structure length382 ft (116.3 m)
Longest span90 ft (27.4 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic473 (2020)
Projected traffic420 by 2033
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 2091 over San Marcos River built?

It was built in 1960, making it 65 years old in 2025.

What condition is FM 2091 over San Marcos 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 FM 2091 over San Marcos River carry?

About 473 vehicles per day (2020 count), of which roughly 22% are trucks.

How long is FM 2091 over San Marcos River?

The structure is 382 ft (116.3 m) long with a longest span of 90 ft (27.4 m) and a deck 26 ft wide.

Who owns FM 2091 over San Marcos River?

It is owned by the State Highway Agency.