US Bridges

SH 105 over Tarkington Bayou Relief

Fair

Liberty County, Texas · 2.9 MI SE of US 59 · Structure no. 201460059301009

Built
1966
59 years old, rebuilt 2017
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
92 ft
3 main spans
Daily traffic
8,521
2022 count
Owner
State
State Highway Agency

About this bridge

SH 105 over Tarkington Bayou Relief is a concrete stringer/multi-beam or girder carrying SH 105 over Tarkington Bayou Relief in Liberty County, Texas. It was built in 1966 and reconstructed in 2017, so it is 59 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 8,521 vehicles a day, roughly 16% of them trucks, projected to reach 17,640 by 2031. The structure is 92 ft (28.1 m) long and 65 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSH 105
CrossesTarkington Bayou Relief
Location2.9 MI SE of US 59
RouteState Highway 105
CountyLiberty County
StateTexas
Coordinates30.32473, -95.04824
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 loadH 20
Structure length92 ft (28.1 m)
Longest span30 ft (9.2 m)
Deck width65 ft (19.9 m)
Roadway width63 ft (19.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,521 (2022)
Projected traffic17,640 by 2031
Trucks16%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 105 over Tarkington Bayou Relief built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2017.

What condition is SH 105 over Tarkington Bayou Relief 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 March 2024.

How much traffic does SH 105 over Tarkington Bayou Relief carry?

About 8,521 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is SH 105 over Tarkington Bayou Relief?

The structure is 92 ft (28.1 m) long with a longest span of 30 ft (9.2 m) and a deck 65 ft wide.

Who owns SH 105 over Tarkington Bayou Relief?

It is owned by the State Highway Agency.