US Bridges

CR 343 (old SH 31) over Harris CR TR

FairPosted for load

Smith County, Texas · 0.15 MI N of SH 155 · Structure no. 102120AA0343101

Built
1922
103 years old, rebuilt 1930
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
81 ft
3 main spans
Daily traffic
722
2022 count
Owner
County
County Highway Agency

About this bridge

CR 343 (old SH 31) over Harris CR TR is a concrete tee beam carrying CR 343 (old SH 31) over Harris CR TR in Smith County, Texas. It was built in 1922 and reconstructed in 1930, so it is 103 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 722 vehicles a day, roughly 3% of them trucks, projected to reach 900 by 2042. The structure is 81 ft (24.7 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 343 (old SH 31)
CrossesHarris CR TR
Location0.15 MI N of SH 155
RouteCounty Highway 343
StateTexas
Coordinates32.4631, -95.18159
Functional classRural Minor Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length81 ft (24.7 m)
Longest span27 ft (8.2 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic722 (2022)
Projected traffic900 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 343 (old SH 31) over Harris CR TR built?

It was built in 1922, making it 103 years old in 2025. It was reconstructed in 1930.

What condition is CR 343 (old SH 31) over Harris CR TR 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 October 2023.

How much traffic does CR 343 (old SH 31) over Harris CR TR carry?

About 722 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is CR 343 (old SH 31) over Harris CR TR?

The structure is 81 ft (24.7 m) long with a longest span of 27 ft (8.2 m) and a deck 27 ft wide.

Who owns CR 343 (old SH 31) over Harris CR TR?

It is owned by the County Highway Agency.