US Bridges

FM 121 over Squirrel Creek

Fair

Grayson County, Texas · 4.1 MI W of US 75 · Structure no. 010920072901023

Built
1983
42 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
120 ft
3 main spans
Daily traffic
3,825
2021 count
Owner
State
State Highway Agency

About this bridge

FM 121 over Squirrel Creek is a concrete stringer/multi-beam or girder carrying FM 121 over Squirrel Creek in Grayson County, Texas. It was built in 1983, so it is 42 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 3,825 vehicles a day, roughly 4% of them trucks, projected to reach 7,268 by 2041. The structure is 120 ft (36.6 m) long and 42 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesFM 121
CrossesSquirrel Creek
Location4.1 MI W of US 75
RouteState Highway 121
CountyGrayson County
StateTexas
Coordinates33.42411, -96.66211
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: 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 rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,825 (2021)
Projected traffic7,268 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 121 over Squirrel Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is FM 121 over Squirrel 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 May 2023.

How much traffic does FM 121 over Squirrel Creek carry?

About 3,825 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FM 121 over Squirrel Creek?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.

Who owns FM 121 over Squirrel Creek?

It is owned by the State Highway Agency.