US Bridges

FM 20 over Little Cottonwood Ck

Fair

Guadalupe County, Texas · 0.7 MI W of FM 621 · Structure no. 150950098701009

Built
1988
37 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
86 ft
7 main spans
Daily traffic
490
2020 count
Owner
State
State Highway Agency

About this bridge

FM 20 over Little Cottonwood Ck is a concrete culvert carrying FM 20 over Little Cottonwood Ck in Guadalupe County, Texas. It was built in 1988, so it is 37 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 490 vehicles a day, roughly 14% of them trucks, projected to reach 810 by 2033. The structure is 86 ft (26.2 m) long and 40 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesFM 20
CrossesLittle Cottonwood Ck
Location0.7 MI W of FM 621
RouteState Highway 20
StateTexas
Coordinates29.73471, -97.82272
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span10 ft (3 m)
Deck width40 ft (12.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic490 (2020)
Projected traffic810 by 2033
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 20 over Little Cottonwood Ck built?

It was built in 1988, making it 37 years old in 2025.

What condition is FM 20 over Little Cottonwood Ck 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 July 2024.

How much traffic does FM 20 over Little Cottonwood Ck carry?

About 490 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is FM 20 over Little Cottonwood Ck?

The structure is 86 ft (26.2 m) long with a longest span of 10 ft (3 m) and a deck 40 ft wide.

Who owns FM 20 over Little Cottonwood Ck?

It is owned by the State Highway Agency.