US Bridges

SH 35C Bus over Mustang Bayou

Fair

Brazoria County, Texas · 0.15 MI S of SH 6 · Structure no. 120200017808008

Built
1935
90 years old, rebuilt 1966
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete
Length
114 ft
4 main spans
Daily traffic
17,630
2023 count
Owner
State
State Highway Agency

About this bridge

SH 35C Bus over Mustang Bayou is a concrete tee beam carrying SH 35C Bus over Mustang Bayou in Brazoria County, Texas. It was built in 1935 and reconstructed in 1966, so it is 90 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 17,630 vehicles a day, roughly 4% of them trucks, projected to reach 17,810 by 2033. The structure is 114 ft (34.7 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 35C Bus
CrossesMustang Bayou
Location0.15 MI S of SH 6
RouteState Highway 35
StateTexas
Coordinates29.42651, -95.24419
Functional classUrban 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length114 ft (34.7 m)
Longest span29 ft (8.7 m)
Deck width64 ft (19.6 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,630 (2023)
Projected traffic17,810 by 2033
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 35C Bus over Mustang Bayou built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1966.

What condition is SH 35C Bus 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 35C Bus over Mustang Bayou carry?

About 17,630 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SH 35C Bus over Mustang Bayou?

The structure is 114 ft (34.7 m) long with a longest span of 29 ft (8.7 m) and a deck 64 ft wide.

Who owns SH 35C Bus over Mustang Bayou?

It is owned by the State Highway Agency.