US Bridges

FM 78 over Salitrillo Creek

Fair

Bexar County, Texas · 7.55 MI NE of IH 410 · Structure no. 150150002509139

Built
1963
62 years old, rebuilt 1995
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
91 ft
3 main spans
Daily traffic
24,914
2023 count
Owner
State
State Highway Agency

About this bridge

FM 78 over Salitrillo Creek is a concrete stringer/multi-beam or girder carrying FM 78 over Salitrillo Creek in Bexar County, Texas. It was built in 1963 and reconstructed in 1995, so it is 62 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 24,914 vehicles a day, roughly 4% of them trucks, projected to reach 35,848 by 2042. The structure is 91 ft (27.7 m) long and 84 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFM 78
CrossesSalitrillo Creek
Location7.55 MI NE of IH 410
RouteState Highway 78
StateTexas
Coordinates29.51983, -98.30805
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length91 ft (27.7 m)
Longest span30 ft (9.1 m)
Deck width84 ft (25.6 m)
Roadway width82 ft (25.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,914 (2023)
Projected traffic35,848 by 2042
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 78 over Salitrillo Creek built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1995.

What condition is FM 78 over Salitrillo Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does FM 78 over Salitrillo Creek carry?

About 24,914 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is FM 78 over Salitrillo Creek?

The structure is 91 ft (27.7 m) long with a longest span of 30 ft (9.1 m) and a deck 84 ft wide.

Who owns FM 78 over Salitrillo Creek?

It is owned by the State Highway Agency.