US Bridges

RM 12 over South Gatlin Creek

Fair

Hays County, Texas · 6.7 MI S of US 290 · Structure no. 141060068303012

Built
1966
59 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
50 ft
4 main spans
Daily traffic
4,927
2020 count
Owner
State
State Highway Agency

About this bridge

RM 12 over South Gatlin Creek is a concrete culvert carrying RM 12 over South Gatlin Creek in Hays County, Texas. It was built in 1966, so it is 59 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 4,927 vehicles a day, roughly 5% of them trucks, projected to reach 8,790 by 2033. The structure is 50 ft (15.2 m) long and 29 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesRM 12
CrossesSouth Gatlin Creek
Location6.7 MI S of US 290
RouteState Highway 12
CountyHays County
StateTexas
Coordinates30.10117, -98.09629
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 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 evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span10 ft (3 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,927 (2020)
Projected traffic8,790 by 2033
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3,000
NavigationNo navigation control on waterway

Frequently asked questions

When was RM 12 over South Gatlin Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is RM 12 over South Gatlin Creek 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 September 2024.

How much traffic does RM 12 over South Gatlin Creek carry?

About 4,927 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is RM 12 over South Gatlin Creek?

The structure is 50 ft (15.2 m) long with a longest span of 10 ft (3 m) and a deck 29 ft wide.

Who owns RM 12 over South Gatlin Creek?

It is owned by the State Highway Agency.