US Bridges

FM 78 over Cibolo Creek & Aztec Way

Fair

Bexar County, Texas · 10.7 MI NE of IH 410 · Structure no. 150150002509227

Built
2002
23 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
550 ft
9 main spans
Daily traffic
30,473
2022 count
Owner
State
State Highway Agency

About this bridge

FM 78 over Cibolo Creek & Aztec Way is a prestressed concrete box beam or girders - multiple carrying FM 78 over Cibolo Creek & Aztec Way in Bexar County, Texas. It was built in 2002, so it is 23 years old, younger 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 30,473 vehicles a day, roughly 4% of them trucks, projected to reach 42,662 by 2042. The structure is 550 ft (167.6 m) long and 70 ft wide.

CarriesFM 78
CrossesCibolo Creek & Aztec Way
Location10.7 MI NE of IH 410
RouteState Highway 78
StateTexas
Coordinates29.55078, -98.27319
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 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be 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 spans9
Design loadHS 20
Structure length550 ft (167.6 m)
Longest span63 ft (19.2 m)
Deck width70 ft (21.3 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,473 (2022)
Projected traffic42,662 by 2042
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 FM 78 over Cibolo Creek & Aztec Way built?

It was built in 2002, making it 23 years old in 2025.

What condition is FM 78 over Cibolo Creek & Aztec Way 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 Cibolo Creek & Aztec Way carry?

About 30,473 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is FM 78 over Cibolo Creek & Aztec Way?

The structure is 550 ft (167.6 m) long with a longest span of 63 ft (19.2 m) and a deck 70 ft wide.

Who owns FM 78 over Cibolo Creek & Aztec Way?

It is owned by the State Highway Agency.