US Bridges

RM 1174 over South San Gabriel River

Fair

Burnet County, Texas · 2.00 MI S of SH 29 · Structure no. 140270134903004

Built
1985
40 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
277
2020 count
Owner
State
State Highway Agency

About this bridge

RM 1174 over South San Gabriel River is a prestressed concrete stringer/multi-beam or girder carrying RM 1174 over South San Gabriel River in Burnet County, Texas. It was built in 1985, so it is 40 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 277 vehicles a day, roughly 12% of them trucks, projected to reach 260 by 2033. The structure is 100 ft (30.5 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesRM 1174
CrossesSouth San Gabriel River
Location2.00 MI S of SH 29
RouteState Highway 1174
CountyBurnet County
StateTexas
Coordinates30.7156, -98.05102
Functional classRural Major 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 inspectionJune 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

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span50 ft (15.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic277 (2020)
Projected traffic260 by 2033
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 RM 1174 over South San Gabriel River built?

It was built in 1985, making it 40 years old in 2025.

What condition is RM 1174 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 June 2023.

How much traffic does RM 1174 over South San Gabriel River carry?

About 277 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is RM 1174 over South San Gabriel River?

The structure is 100 ft (30.5 m) long with a longest span of 50 ft (15.2 m) and a deck 30 ft wide.

Who owns RM 1174 over South San Gabriel River?

It is owned by the State Highway Agency.