US Bridges

SH 35 SB over Mustang Bayou

Fair

Brazoria County, Texas · 1.05 MI S of SH 6 · Structure no. 120200017803041

Built
1963
62 years old, rebuilt 1988
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
92 ft
3 main spans
Daily traffic
11,430
2020 count
Owner
State
State Highway Agency

About this bridge

SH 35 SB over Mustang Bayou is a concrete stringer/multi-beam or girder carrying SH 35 SB over Mustang Bayou in Brazoria County, Texas. It was built in 1963 and reconstructed in 1988, so it is 62 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 5 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 11,430 vehicles a day, roughly 9% of them trucks, projected to reach 14,800 by 2033. The structure is 92 ft (28.1 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 35 SB
CrossesMustang Bayou
Location1.05 MI S of SH 6
RouteState Highway 35
CountyBrazoria County
StateTexas
Coordinates29.40906, -95.23324
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length92 ft (28.1 m)
Longest span30 ft (9.2 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,430 (2020)
Projected traffic14,800 by 2033
Trucks9%
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 35 SB over Mustang Bayou built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1988.

What condition is SH 35 SB over Mustang Bayou 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 November 2024.

How much traffic does SH 35 SB over Mustang Bayou carry?

About 11,430 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is SH 35 SB over Mustang Bayou?

The structure is 92 ft (28.1 m) long with a longest span of 30 ft (9.2 m) and a deck 39 ft wide.

Who owns SH 35 SB over Mustang Bayou?

It is owned by the State Highway Agency.