US Bridges

Old Sour Lake RD over Lnva Canal

Fair

Jefferson County, Texas · 6.20 MI W of FM 364 · Structure no. 201240AA0112004

Built
1981
44 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
81 ft
6 main spans
Daily traffic
1,850
2022 count
Owner
County
County Highway Agency

About this bridge

Old Sour Lake RD over Lnva Canal is a concrete culvert carrying Old Sour Lake RD over Lnva Canal in Jefferson County, Texas. It was built in 1981, so it is 44 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 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 1,850 vehicles a day, projected to reach 1,280 by 2035. The structure is 81 ft (24.7 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesOld Sour Lake RD
CrossesLnva Canal
Location6.20 MI W of FM 364
RouteCounty Highway 0
CountyJefferson County
StateTexas
Coordinates30.08737, -94.29104
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 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 evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length81 ft (24.7 m)
Longest span13 ft (4 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,850 (2022)
Projected traffic1,280 by 2035
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Old Sour Lake RD over Lnva Canal built?

It was built in 1981, making it 44 years old in 2025.

What condition is Old Sour Lake RD over Lnva Canal 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 Old Sour Lake RD over Lnva Canal carry?

About 1,850 vehicles per day (2022 count).

How long is Old Sour Lake RD over Lnva Canal?

The structure is 81 ft (24.7 m) long with a longest span of 13 ft (4 m) and a deck 30 ft wide.

Who owns Old Sour Lake RD over Lnva Canal?

It is owned by the County Highway Agency.