US Bridges

SH 146 NB over Cwa (lynchburg) Canal

Good

Liberty County, Texas · 0.7 MI N of Chambers C/L · Structure no. 201460038901350

Built
2011
14 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
135 ft
1 main span
Daily traffic
6,623
2022 count
Owner
State
State Highway Agency

About this bridge

SH 146 NB over Cwa (lynchburg) Canal is a prestressed concrete stringer/multi-beam or girder carrying SH 146 NB over Cwa (lynchburg) Canal in Liberty County, Texas. It was built in 2011, so it is 14 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 6,623 vehicles a day, roughly 13% of them trucks, projected to reach 7,120 by 2033. The structure is 135 ft (41.1 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 146 NB
CrossesCwa (lynchburg) Canal
Location0.7 MI N of Chambers C/L
RouteState Highway 146
CountyLiberty County
StateTexas
Coordinates29.89724, -94.89603
Functional classUrban Other Principal 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length135 ft (41.1 m)
Longest span135 ft (41.1 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,623 (2022)
Projected traffic7,120 by 2033
Trucks13%
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 146 NB over Cwa (lynchburg) Canal built?

It was built in 2011, making it 14 years old in 2025.

What condition is SH 146 NB over Cwa (lynchburg) 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 April 2024.

How much traffic does SH 146 NB over Cwa (lynchburg) Canal carry?

About 6,623 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is SH 146 NB over Cwa (lynchburg) Canal?

The structure is 135 ft (41.1 m) long with a longest span of 135 ft (41.1 m) and a deck 40 ft wide.

Who owns SH 146 NB over Cwa (lynchburg) Canal?

It is owned by the State Highway Agency.