US Bridges

Sour Lake Road over Willow Marsh Bayou

Fair

Jefferson County, Texas · 2.10 MI W of FM 364 · Structure no. 201240AA0112002

Built
1983
42 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete
Length
60 ft
4 main spans
Daily traffic
1,638
2022 count
Owner
County
County Highway Agency

About this bridge

Sour Lake Road over Willow Marsh Bayou is a concrete slab carrying Sour Lake Road over Willow Marsh Bayou in Jefferson County, Texas. It was built in 1983, so it is 42 years old, younger 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 1,638 vehicles a day, projected to reach 2,400 by 2035. The structure is 60 ft (18.3 m) long and 28 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesSour Lake Road
CrossesWillow Marsh Bayou
Location2.10 MI W of FM 364
RouteCounty Highway 0
CountyJefferson County
StateTexas
Coordinates30.07641, -94.22395
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,638 (2022)
Projected traffic2,400 by 2035
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Sour Lake Road over Willow Marsh Bayou built?

It was built in 1983, making it 42 years old in 2025.

What condition is Sour Lake Road over Willow Marsh 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 July 2023.

How much traffic does Sour Lake Road over Willow Marsh Bayou carry?

About 1,638 vehicles per day (2022 count).

How long is Sour Lake Road over Willow Marsh Bayou?

The structure is 60 ft (18.3 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns Sour Lake Road over Willow Marsh Bayou?

It is owned by the County Highway Agency.