US Bridges

SH 6 NB over Grassy Creek

Fair

Grimes County, Texas · 2.9 MI S of SH 105 · Structure no. 170940005003036

Built
1964
61 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
425 ft
14 main spans
Daily traffic
13,326
2020 count
Owner
State
State Highway Agency

About this bridge

SH 6 NB over Grassy Creek is a concrete stringer/multi-beam or girder carrying SH 6 NB over Grassy Creek in Grimes County, Texas. It was built in 1964, so it is 61 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 13,326 vehicles a day, roughly 19% of them trucks, projected to reach 15,986 by 2039. The structure is 425 ft (129.5 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 6 NB
CrossesGrassy Creek
Location2.9 MI S of SH 105
RouteState Highway 6
CountyGrimes County
StateTexas
Coordinates30.33838, -96.04827
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
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
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans14
Design loadH 20
Structure length425 ft (129.5 m)
Longest span30 ft (9.1 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,326 (2020)
Projected traffic15,986 by 2039
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 6 NB over Grassy Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is SH 6 NB 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 6 NB over Grassy Creek carry?

About 13,326 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is SH 6 NB over Grassy Creek?

The structure is 425 ft (129.5 m) long with a longest span of 30 ft (9.1 m) and a deck 33 ft wide.

Who owns SH 6 NB over Grassy Creek?

It is owned by the State Highway Agency.