US Bridges

SH 105 over Lnva Canal

Good

Jefferson County, Texas · 3.3 MI W of US 69 · Structure no. 201240033905015

Built
1998
27 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
135 ft
3 main spans
Daily traffic
11,008
2016 count
Owner
State
State Highway Agency

About this bridge

SH 105 over Lnva Canal is a prestressed concrete box beam or girders - multiple carrying SH 105 over Lnva Canal in Jefferson County, Texas. It was built in 1998, so it is 27 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 11,008 vehicles a day, roughly 8% of them trucks, projected to reach 15,590 by 2033. The structure is 135 ft (41.1 m) long and 86 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSH 105
CrossesLnva Canal
Location3.3 MI W of US 69
RouteState Highway 105
StateTexas
Coordinates30.13299, -94.22344
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span45 ft (13.7 m)
Deck width86 ft (26.2 m)
Roadway width83 ft (25.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,008 (2016)
Projected traffic15,590 by 2033
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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 105 over Lnva Canal built?

It was built in 1998, making it 27 years old in 2025.

What condition is SH 105 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 May 2024.

How much traffic does SH 105 over Lnva Canal carry?

About 11,008 vehicles per day (2016 count), of which roughly 8% are trucks.

How long is SH 105 over Lnva Canal?

The structure is 135 ft (41.1 m) long with a longest span of 45 ft (13.7 m) and a deck 86 ft wide.

Who owns SH 105 over Lnva Canal?

It is owned by the State Highway Agency.