US Bridges

SH 30 over Big Lake Creek

Fair

Grimes County, Texas · 5.25 MI NE of SH 90 · Structure no. 170940021201003

Built
1927
98 years old, rebuilt 1961
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
110 ft
5 main spans
Daily traffic
5,434
2023 count
Owner
State
State Highway Agency

About this bridge

SH 30 over Big Lake Creek is a concrete slab carrying SH 30 over Big Lake Creek in Grimes County, Texas. It was built in 1927 and reconstructed in 1961, so it is 98 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 5,434 vehicles a day, roughly 6% of them trucks, projected to reach 6,490 by 2033. The structure is 110 ft (33.5 m) long and 44 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSH 30
CrossesBig Lake Creek
Location5.25 MI NE of SH 90
RouteState Highway 30
CountyGrimes County
StateTexas
Coordinates30.62901, -95.87931
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
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 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 rating61 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadOther
Structure length110 ft (33.5 m)
Longest span22 ft (6.7 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,434 (2023)
Projected traffic6,490 by 2033
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

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 30 over Big Lake Creek built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1961.

What condition is SH 30 over Big Lake 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 30 over Big Lake Creek carry?

About 5,434 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SH 30 over Big Lake Creek?

The structure is 110 ft (33.5 m) long with a longest span of 22 ft (6.7 m) and a deck 44 ft wide.

Who owns SH 30 over Big Lake Creek?

It is owned by the State Highway Agency.