US Bridges

12th Street over Lnva Canal

Good

Jefferson County, Texas · 0.2 MI SW of Magnolia Ave · Structure no. 201240F00120002

Built
2021
4 years old
Condition
Good
inspected July 2023
Type
Other
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
100
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

12th Street over Lnva Canal is a prestressed concrete other carrying 12th Street over Lnva Canal in Jefferson County, Texas. It was built in 2021, so it is 4 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 100 vehicles a day, projected to reach 1 by 1900. The structure is 40 ft (12.2 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries12th Street
CrossesLnva Canal
Location0.2 MI SW of Magnolia Ave
RouteCity Street 0
CountyJefferson County
StateTexas
Coordinates29.97999, -93.96825
Functional classUrban Local

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 inspectionJuly 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeOther
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic1 by 1900
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 12th Street over Lnva Canal built?

It was built in 2021, making it 4 years old in 2025.

What condition is 12th Street over Lnva Canal 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 July 2023.

How much traffic does 12th Street over Lnva Canal carry?

About 100 vehicles per day (2020 count).

How long is 12th Street over Lnva Canal?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns 12th Street over Lnva Canal?

It is owned by the City or Municipal Highway Agency.