US Bridges

FM 18 over Buck Creek

Fair

Callahan County, Texas · 1.60 MI W of FM 603 · Structure no. 080300000611039

Built
1990
35 years old
Condition
Fair
inspected February 2023
Type
Culvert
Steel
Length
90 ft
8 main spans
Daily traffic
3,469
2020 count
Owner
State
State Highway Agency

About this bridge

FM 18 over Buck Creek is a steel culvert carrying FM 18 over Buck Creek in Callahan County, Texas. It was built in 1990, so it is 35 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 3,469 vehicles a day, roughly 17% of them trucks, projected to reach 4,080 by 2033. The structure is 90 ft (27.4 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM 18
CrossesBuck Creek
Location1.60 MI W of FM 603
RouteState Highway 18
StateTexas
Coordinates32.41439, -99.58706
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating62.9 US tons
Inventory rating38 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckConcrete, cast-in-place
Main spans8
Design loadUnknown
Structure length90 ft (27.4 m)
Longest span9 ft (2.7 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,469 (2020)
Projected traffic4,080 by 2033
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 FM 18 over Buck Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is FM 18 over Buck 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 February 2023.

How much traffic does FM 18 over Buck Creek carry?

About 3,469 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is FM 18 over Buck Creek?

The structure is 90 ft (27.4 m) long with a longest span of 9 ft (2.7 m) and a deck 46 ft wide.

Who owns FM 18 over Buck Creek?

It is owned by the State Highway Agency.