US Bridges

Old Galveston RD over Mustang Bayou

Good

Brazoria County, Texas · 0.10 MI E of Bus 35 · Structure no. 120200D00920001

Built
2015
10 years old
Condition
Good
inspected December 2023
Type
Slab
Prestressed Concrete
Length
110 ft
1 main span
Daily traffic
742
2010 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Old Galveston RD over Mustang Bayou is a prestressed concrete slab carrying Old Galveston RD over Mustang Bayou in Brazoria County, Texas. It was built in 2015, so it is 10 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 742 vehicles a day, projected to reach 1,036 by 2030. The structure is 110 ft (33.5 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOld Galveston RD
CrossesMustang Bayou
Location0.10 MI E of Bus 35
RouteCity Street 0
CountyBrazoria County
StateTexas
Coordinates29.42509, -95.2419
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHL 93
Structure length110 ft (33.5 m)
Longest span50 ft (15.2 m)
Deck width38 ft (11.6 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic742 (2010)
Projected traffic1,036 by 2030
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$14,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Galveston RD over Mustang Bayou built?

It was built in 2015, making it 10 years old in 2025.

What condition is Old Galveston RD over Mustang Bayou 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 Old Galveston RD over Mustang Bayou carry?

About 742 vehicles per day (2010 count).

How long is Old Galveston RD over Mustang Bayou?

The structure is 110 ft (33.5 m) long with a longest span of 50 ft (15.2 m) and a deck 38 ft wide.

Who owns Old Galveston RD over Mustang Bayou?

It is owned by the Town or Township Highway Agency.