US Bridges

SH 21 SB Ramp over Drain

Good

Hays County, Texas · .025 MI NE of SH 21 · Structure no. 141060354503214

Built
2023
2 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
898 ft
8 main spans
Daily traffic
9,600
2015 count
Owner
State
State Highway Agency

About this bridge

SH 21 SB Ramp over Drain is a prestressed concrete stringer/multi-beam or girder carrying SH 21 SB Ramp over Drain in Hays County, Texas. It was built in 2023, so it is 2 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 9,600 vehicles a day, projected to reach 1 by 1900. The structure is 898 ft (273.7 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSH 21 SB Ramp
CrossesDrain
Location.025 MI NE of SH 21
RouteState Highway 10
StateTexas
Coordinates29.88963, -97.88314
Functional classUrban Other Principal 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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum 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 spans8 (+2 approach)
Design loadHL 93
Structure length898 ft (273.7 m)
Longest span95 ft (29 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,600 (2015)
Projected traffic1 by 1900
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed5 mi (8 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 21 SB Ramp over Drain built?

It was built in 2023, making it 2 years old in 2025.

What condition is SH 21 SB Ramp over Drain 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 December 2023.

How much traffic does SH 21 SB Ramp over Drain carry?

About 9,600 vehicles per day (2015 count).

How long is SH 21 SB Ramp over Drain?

The structure is 898 ft (273.7 m) long with a longest span of 95 ft (29 m) and a deck 26 ft wide.

Who owns SH 21 SB Ramp over Drain?

It is owned by the State Highway Agency.