US Bridges

SH 121 & SH 289 over Palmers Branch

Fair

Collin County, Texas · 0.05 MI W of SH 289 · Structure no. 180430036404186

Built
1995
30 years old, rebuilt 2007
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
60 ft
5 main spans
Daily traffic
110,632
2018 count
Owner
State
State Highway Agency

About this bridge

SH 121 & SH 289 over Palmers Branch is a concrete culvert carrying SH 121 & SH 289 over Palmers Branch in Collin County, Texas. It was built in 1995 and reconstructed in 2007, so it is 30 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 110,632 vehicles a day, roughly 5% of them trucks, projected to reach 154,885 by 2038. The structure is 60 ft (18.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSH 121 & SH 289
CrossesPalmers Branch
Location0.05 MI W of SH 289
RouteState Highway 121
CountyCollin County
StateTexas
Coordinates33.09709, -96.80552
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110,632 (2018)
Projected traffic154,885 by 2038
Trucks5%
Lanes on structure18
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
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 & SH 289 over Palmers Branch built?

It was built in 1995, making it 30 years old in 2025. It was reconstructed in 2007.

What condition is SH 121 & SH 289 over Palmers 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 November 2023.

How much traffic does SH 121 & SH 289 over Palmers Branch carry?

About 110,632 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is SH 121 & SH 289 over Palmers Branch?

The structure is 60 ft (18.3 m) long with a longest span of 10 ft (3 m).

Who owns SH 121 & SH 289 over Palmers Branch?

It is owned by the State Highway Agency and maintained by the Local Toll Authority.