US Bridges

SH 6 over Sylvia Creek

Fair

Grimes County, Texas · 0.25 MI SE of FM 3090 · Structure no. 170940005003047

Built
1970
55 years old, rebuilt 2015
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
25,973
2020 count
Owner
State
State Highway Agency

About this bridge

SH 6 over Sylvia Creek is a concrete culvert carrying SH 6 over Sylvia Creek in Grimes County, Texas. It was built in 1970 and reconstructed in 2015, so it is 55 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 25,973 vehicles a day, roughly 18% of them trucks, projected to reach 42,281 by 2039. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 6
CrossesSylvia Creek
Location0.25 MI SE of FM 3090
RouteState Highway 6
CountyGrimes County
StateTexas
Coordinates30.40568, -96.08059
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,973 (2020)
Projected traffic42,281 by 2039
Trucks18%
Lanes on structure10
Traffic directionTwo-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 over Sylvia Creek built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2015.

What condition is SH 6 over Sylvia 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 over Sylvia Creek carry?

About 25,973 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is SH 6 over Sylvia Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns SH 6 over Sylvia Creek?

It is owned by the State Highway Agency.