US Bridges

SH 173 over Santa Anna Creek

Good

Atascosa County, Texas · 2.6 Mi. W. of FM 2146 · Structure no. 150070042104045

Built
2006
19 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
2 main spans
Daily traffic
3,049
2023 count
Owner
State
State Highway Agency

About this bridge

SH 173 over Santa Anna Creek is a prestressed concrete stringer/multi-beam or girder carrying SH 173 over Santa Anna Creek in Atascosa County, Texas. It was built in 2006, so it is 19 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 3,049 vehicles a day, roughly 8% of them trucks, projected to reach 2,200 by 2029. The structure is 120 ft (36.6 m) long and 46 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSH 173
CrossesSanta Anna Creek
Location2.6 Mi. W. of FM 2146
RouteState Highway 173
CountyAtascosa County
StateTexas
Coordinates28.98762, -98.69572
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal 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 length120 ft (36.6 m)
Longest span60 ft (18.3 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,049 (2023)
Projected traffic2,200 by 2029
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 SH 173 over Santa Anna Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is SH 173 over Santa Anna 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 May 2024.

How much traffic does SH 173 over Santa Anna Creek carry?

About 3,049 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SH 173 over Santa Anna Creek?

The structure is 120 ft (36.6 m) long with a longest span of 60 ft (18.3 m) and a deck 46 ft wide.

Who owns SH 173 over Santa Anna Creek?

It is owned by the State Highway Agency.