US Bridges

SH 146 SB over Cwa (lynchburg) Canal

Fair

Liberty County, Texas · 0.7 MI N of Chambers C/L · Structure no. 201460038901069

Built
1972
53 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
126 ft
3 main spans
Daily traffic
13,246
2022 count
Owner
State
State Highway Agency

About this bridge

SH 146 SB over Cwa (lynchburg) Canal is a concrete stringer/multi-beam or girder carrying SH 146 SB over Cwa (lynchburg) Canal in Liberty County, Texas. It was built in 1972, so it is 53 years old, older 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 13,246 vehicles a day, roughly 13% of them trucks, projected to reach 7,120 by 2033. The structure is 126 ft (38.4 m) long and 50 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSH 146 SB
CrossesCwa (lynchburg) Canal
Location0.7 MI N of Chambers C/L
RouteState Highway 146
CountyLiberty County
StateTexas
Coordinates29.89713, -94.89633
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length126 ft (38.4 m)
Longest span42 ft (12.8 m)
Deck width50 ft (15.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,246 (2022)
Projected traffic7,120 by 2033
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 146 SB over Cwa (lynchburg) Canal built?

It was built in 1972, making it 53 years old in 2025.

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

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

About 13,246 vehicles per day (2022 count), of which roughly 13% are trucks.

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

The structure is 126 ft (38.4 m) long with a longest span of 42 ft (12.8 m) and a deck 50 ft wide.

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

It is owned by the State Highway Agency.