US Bridges

SH 173 over Medina River

Good

Bandera County, Texas · 0.15 MI SE SH 16 · Structure no. 150100042107039

Built
1971
54 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
361 ft
9 main spans
Daily traffic
7,880
2023 count
Owner
State
State Highway Agency

About this bridge

SH 173 over Medina River is a concrete stringer/multi-beam or girder carrying SH 173 over Medina River in Bandera County, Texas. It was built in 1971, so it is 54 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 7,880 vehicles a day, roughly 7% of them trucks, projected to reach 10,460 by 2033. The structure is 361 ft (110 m) long and 46 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesSH 173
CrossesMedina River
Location0.15 MI SE SH 16
RouteState Highway 173
StateTexas
Coordinates29.72289, -99.06905
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length361 ft (110 m)
Longest span40 ft (12.2 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,880 (2023)
Projected traffic10,460 by 2033
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 173 over Medina River built?

It was built in 1971, making it 54 years old in 2025.

What condition is SH 173 over Medina River 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 Medina River carry?

About 7,880 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SH 173 over Medina River?

The structure is 361 ft (110 m) long with a longest span of 40 ft (12.2 m) and a deck 46 ft wide.

Who owns SH 173 over Medina River?

It is owned by the State Highway Agency.