US Bridges

SH 35 WB over Middle Bayou

Good

Brazoria County, Texas · 3.50 MI SW of FM 521 · Structure no. 120200017902102

Built
2006
19 years old
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
160 ft
4 main spans
Daily traffic
8,079
2023 count
Owner
State
State Highway Agency

About this bridge

SH 35 WB over Middle Bayou is a prestressed concrete slab carrying SH 35 WB over Middle Bayou in Brazoria County, Texas. It was built in 2006, so it is 19 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 8,079 vehicles a day, roughly 11% of them trucks, projected to reach 14,680 by 2030. The structure is 160 ft (48.8 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 35 WB
CrossesMiddle Bayou
Location3.50 MI SW of FM 521
RouteState Highway 35
StateTexas
Coordinates29.14286, -95.56916
Functional classRural Minor Arterial

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
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 spans4
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,079 (2023)
Projected traffic14,680 by 2030
Trucks11%
Lanes on structure2
Traffic directionOne-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 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 SH 35 WB over Middle Bayou built?

It was built in 2006, making it 19 years old in 2025.

What condition is SH 35 WB over Middle 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 August 2024.

How much traffic does SH 35 WB over Middle Bayou carry?

About 8,079 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SH 35 WB over Middle Bayou?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 41 ft wide.

Who owns SH 35 WB over Middle Bayou?

It is owned by the State Highway Agency.