US Bridges

SH 121 over Cottonwood Branch

Fair

Tarrant County, Texas · 0.9 N of SH-121&114 Split · Structure no. 022200036401050

Built
1981
44 years old, rebuilt 2011
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
98 ft
8 main spans
Daily traffic
93,082
2020 count
Owner
State
State Highway Agency

About this bridge

SH 121 over Cottonwood Branch is a concrete culvert carrying SH 121 over Cottonwood Branch in Tarrant County, Texas. It was built in 1981 and reconstructed in 2011, so it is 44 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 93,082 vehicles a day, roughly 5% of them trucks, projected to reach 145,040 by 2033. The structure is 98 ft (29.9 m) long and 797 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSH 121
CrossesCottonwood Branch
Location0.9 N of SH-121&114 Split
RouteState Highway 121
CountyTarrant County
StateTexas
Coordinates32.94798, -97.04014
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans8
Design loadHS 20
Structure length98 ft (29.9 m)
Longest span8 ft (2.4 m)
Deck width797 ft (243 m)
Roadway width202 ft (61.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic93,082 (2020)
Projected traffic145,040 by 2033
Trucks5%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 121 over Cottonwood Branch built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2011.

What condition is SH 121 over Cottonwood Branch 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 May 2024.

How much traffic does SH 121 over Cottonwood Branch carry?

About 93,082 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is SH 121 over Cottonwood Branch?

The structure is 98 ft (29.9 m) long with a longest span of 8 ft (2.4 m) and a deck 797 ft wide.

Who owns SH 121 over Cottonwood Branch?

It is owned by the State Highway Agency.