US Bridges

SH 105 over Grassy Creek

Fair

Grimes County, Texas · 4.6 MI E of SH 6 · Structure no. 170940033801107

Built
1978
47 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
282 ft
4 main spans
Daily traffic
15,414
2023 count
Owner
State
State Highway Agency

About this bridge

SH 105 over Grassy Creek is a prestressed concrete stringer/multi-beam or girder carrying SH 105 over 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 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 15,414 vehicles a day, roughly 15% of them trucks, projected to reach 11,052 by 2039. The structure is 282 ft (86 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSH 105
CrossesGrassy Creek
Location4.6 MI E of SH 6
RouteState Highway 105
CountyGrimes County
StateTexas
Coordinates30.35341, -95.9963
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: 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 typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length282 ft (86 m)
Longest span71 ft (21.6 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,414 (2023)
Projected traffic11,052 by 2039
Trucks15%
Lanes on structure2
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 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 Grassy Creek built?

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

What condition is SH 105 over Grassy 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 SH 105 over Grassy Creek carry?

About 15,414 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is SH 105 over Grassy Creek?

The structure is 282 ft (86 m) long with a longest span of 71 ft (21.6 m) and a deck 46 ft wide.

Who owns SH 105 over Grassy Creek?

It is owned by the State Highway Agency.