US Bridges

SH 85 over San Miguel Creek

Good

Frio County, Texas · 6.00 MI E of FM 1582 · Structure no. 150830030107040

Built
1978
47 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
225 ft
3 main spans
Daily traffic
2,415
2019 count
Owner
State
State Highway Agency

About this bridge

SH 85 over San Miguel Creek is a prestressed concrete stringer/multi-beam or girder carrying SH 85 over San Miguel Creek in Frio County, Texas. It was built in 1978, so it is 47 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 2,415 vehicles a day, roughly 35% of them trucks, projected to reach 4,590 by 2033. The structure is 225 ft (68.6 m) long and 36 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesSH 85
CrossesSan Miguel Creek
Location6.00 MI E of FM 1582
RouteState Highway 85
StateTexas
Coordinates28.8011, -98.89507
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum 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

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span75 ft (22.9 m)
Deck width36 ft (11.1 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,415 (2019)
Projected traffic4,590 by 2033
Trucks35%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 85 over San Miguel Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is SH 85 over San Miguel 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 July 2024.

How much traffic does SH 85 over San Miguel Creek carry?

About 2,415 vehicles per day (2019 count), of which roughly 35% are trucks.

How long is SH 85 over San Miguel Creek?

The structure is 225 ft (68.6 m) long with a longest span of 75 ft (22.9 m) and a deck 36 ft wide.

Who owns SH 85 over San Miguel Creek?

It is owned by the State Highway Agency.