US Bridges

SH 21 over US 290

Good

Bastrop County, Texas · 2.1 MI W of FM 2104 · Structure no. 140110011406115

Built
1969
56 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
280 ft
2 main spans
Daily traffic
9,910
2013 count
Owner
State
State Highway Agency

About this bridge

SH 21 over US 290 is a prestressed concrete stringer/multi-beam or girder carrying SH 21 over US 290 in Bastrop County, Texas. It was built in 1969, so it is 56 years old, older 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 9,910 vehicles a day, roughly 12% of them trucks, projected to reach 13,880 by 2033. The structure is 280 ft (85.3 m) long and 70 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesSH 21
CrossesUS 290
Location2.1 MI W of FM 2104
RouteState Highway 21
StateTexas
Coordinates30.21305, -97.14323
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating31 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 20
Structure length280 ft (85.3 m)
Longest span80 ft (24.4 m)
Deck width70 ft (21.4 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,910 (2013)
Projected traffic13,880 by 2033
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 21 over US 290 built?

It was built in 1969, making it 56 years old in 2025.

What condition is SH 21 over US 290 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 2024.

How much traffic does SH 21 over US 290 carry?

About 9,910 vehicles per day (2013 count), of which roughly 12% are trucks.

How long is SH 21 over US 290?

The structure is 280 ft (85.3 m) long with a longest span of 80 ft (24.4 m) and a deck 70 ft wide.

Who owns SH 21 over US 290?

It is owned by the State Highway Agency.