US Bridges

SH 105 over Little Grassy Creek

Good

Grimes County, Texas · 3.5 MI E of SH 6 · Structure no. 170940033801106

Built
1978
47 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
40 ft
4 main spans
Daily traffic
8,565
2020 count
Owner
State
State Highway Agency

About this bridge

SH 105 over Little Grassy Creek is a concrete culvert carrying SH 105 over Little Grassy Creek in Grimes County, Texas. It was built in 1978, so it is 47 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,565 vehicles a day, roughly 15% of them trucks, projected to reach 11,052 by 2039. The structure is 40 ft (12.2 m) long and 146 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesSH 105
CrossesLittle Grassy Creek
Location3.5 MI E of SH 6
RouteState Highway 105
CountyGrimes County
StateTexas
Coordinates30.36282, -96.01207
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
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 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 rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span9 ft (2.7 m)
Deck width146 ft (44.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,565 (2020)
Projected traffic11,052 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 105 over Little Grassy Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is SH 105 over Little Grassy 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 May 2023.

How much traffic does SH 105 over Little Grassy Creek carry?

About 8,565 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is SH 105 over Little Grassy Creek?

The structure is 40 ft (12.2 m) long with a longest span of 9 ft (2.7 m) and a deck 146 ft wide.

Who owns SH 105 over Little Grassy Creek?

It is owned by the State Highway Agency.