US Bridges

CR 406 over Thomas Creek

Good

Grimes County, Texas · 0.55 MI S of FM 1774 · Structure no. 170940AA0192101

Built
2023
2 years old
Condition
Good
inspected December 2023
Type
Slab
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
103
2019 count
Owner
County
County Highway Agency

About this bridge

CR 406 over Thomas Creek is a prestressed concrete slab carrying CR 406 over Thomas Creek in Grimes County, Texas. It was built in 2023, so it is 2 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 103 vehicles a day, projected to reach 144 by 2039. The structure is 120 ft (36.6 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCR 406
CrossesThomas Creek
Location0.55 MI S of FM 1774
RouteCounty Highway 406
CountyGrimes County
StateTexas
Coordinates30.45853, -95.97369
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span45 ft (13.7 m)
Deck width26 ft (7.9 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic103 (2019)
Projected traffic144 by 2039
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was CR 406 over Thomas Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is CR 406 over Thomas Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does CR 406 over Thomas Creek carry?

About 103 vehicles per day (2019 count).

How long is CR 406 over Thomas Creek?

The structure is 120 ft (36.6 m) long with a longest span of 45 ft (13.7 m) and a deck 26 ft wide.

Who owns CR 406 over Thomas Creek?

It is owned by the County Highway Agency.