US Bridges

SH 21 over Branch of Elm Creek

Good

Hays County, Texas · 2.9 MI W of US 183 · Structure no. 141060047102113

Built
2016
9 years old, rebuilt 2020
Condition
Good
inspected September 2024
Type
Other
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
15,706
2023 count
Owner
State
State Highway Agency

About this bridge

SH 21 over Branch of Elm Creek is a prestressed concrete other carrying SH 21 over Branch of Elm Creek in Hays County, Texas. It was built in 2016 and reconstructed in 2020, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,706 vehicles a day, roughly 14% of them trucks, projected to reach 27,014 by 2042. The structure is 50 ft (15.2 m) long and 45 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSH 21
CrossesBranch of Elm Creek
Location2.9 MI W of US 183
RouteState Highway 21
StateTexas
Coordinates30.00698, -97.73138
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 typeOther
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,706 (2023)
Projected traffic27,014 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 21 over Branch of Elm Creek built?

It was built in 2016, making it 9 years old in 2025. It was reconstructed in 2020.

What condition is SH 21 over Branch of Elm Creek 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 21 over Branch of Elm Creek carry?

About 15,706 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SH 21 over Branch of Elm Creek?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 45 ft wide.

Who owns SH 21 over Branch of Elm Creek?

It is owned by the State Highway Agency.