US Bridges

CR 30 over Oyster Creek

Good

Brazoria County, Texas · 2.60 MI W of FM 521 · Structure no. 120200AA0107002

Built
1988
37 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
287 ft
7 main spans
Daily traffic
470
2011 count
Owner
County
County Highway Agency

About this bridge

CR 30 over Oyster Creek is a concrete stringer/multi-beam or girder carrying CR 30 over Oyster Creek in Brazoria County, Texas. It was built in 1988, so it is 37 years old, younger 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 470 vehicles a day, projected to reach 550 by 2031. The structure is 287 ft (87.5 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCR 30
CrossesOyster Creek
Location2.60 MI W of FM 521
RouteCounty Highway 30
StateTexas
Coordinates29.19961, -95.51604
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadUnknown
Structure length287 ft (87.5 m)
Longest span41 ft (12.5 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic470 (2011)
Projected traffic550 by 2031
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 30 over Oyster Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is CR 30 over Oyster 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 December 2023.

How much traffic does CR 30 over Oyster Creek carry?

About 470 vehicles per day (2011 count).

How long is CR 30 over Oyster Creek?

The structure is 287 ft (87.5 m) long with a longest span of 41 ft (12.5 m) and a deck 33 ft wide.

Who owns CR 30 over Oyster Creek?

It is owned by the County Highway Agency.