US Bridges

SH 121 Sbfr over Br of West Rowlett Creek

Fair

Collin County, Texas · 0.1 MI W of Custer RD · Structure no. 180430036404142

Built
2005
20 years old, rebuilt 2016
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
64 ft
4 main spans
Daily traffic
16,761
2020 count
Owner
Toll Authority
Local Toll Authority

About this bridge

SH 121 Sbfr over Br of West Rowlett Creek is a concrete culvert carrying SH 121 Sbfr over Br of West Rowlett Creek in Collin County, Texas. It was built in 2005 and reconstructed in 2016, so it is 20 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 16,761 vehicles a day, roughly 5% of them trucks, projected to reach 23,465 by 2038. The structure is 64 ft (19.5 m) long.

Location

Open in Google Maps
CarriesSH 121 Sbfr
CrossesBr of West Rowlett Creek
Location0.1 MI W of Custer RD
RouteState Highway 121
CountyCollin County
StateTexas
Coordinates33.12521, -96.73466
Functional classUrban Local

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,761 (2020)
Projected traffic23,465 by 2038
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
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 Sbfr over Br of West Rowlett Creek built?

It was built in 2005, making it 20 years old in 2025. It was reconstructed in 2016.

What condition is SH 121 Sbfr over Br of West Rowlett 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 October 2023.

How much traffic does SH 121 Sbfr over Br of West Rowlett Creek carry?

About 16,761 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is SH 121 Sbfr over Br of West Rowlett Creek?

The structure is 64 ft (19.5 m) long with a longest span of 9 ft (2.7 m).

Who owns SH 121 Sbfr over Br of West Rowlett Creek?

It is owned by the Local Toll Authority.