US Bridges

SH 43 over Karnack Creek

Good

Harrison County, Texas · 7.15 MI NE of Lp 390 · Structure no. 191030020802004

Built
1934
91 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
2,091
2020 count
Owner
State
State Highway Agency

About this bridge

SH 43 over Karnack Creek is a concrete culvert carrying SH 43 over Karnack Creek in Harrison County, Texas. It was built in 1934, so it is 91 years old, older 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 2,091 vehicles a day, roughly 20% of them trucks, projected to reach 3,660 by 2033. The structure is 32 ft (9.8 m) long and 40 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSH 43
CrossesKarnack Creek
Location7.15 MI NE of Lp 390
RouteState Highway 43
CountyHarrison County
StateTexas
Coordinates32.62131, -94.20972
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width40 ft (12.3 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,091 (2020)
Projected traffic3,660 by 2033
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 43 over Karnack Creek built?

It was built in 1934, making it 91 years old in 2025.

What condition is SH 43 over Karnack Creek 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 September 2023.

How much traffic does SH 43 over Karnack Creek carry?

About 2,091 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is SH 43 over Karnack Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 40 ft wide.

Who owns SH 43 over Karnack Creek?

It is owned by the State Highway Agency.