US Bridges

SR 43 over Unnamed Stream

Good

Lawrence County, Mississippi · 1.4 MI N SR 42 · Structure no. 310004303911070

Built
1956
69 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
800
2023 count
Owner
State
State Highway Agency

About this bridge

SR 43 over Unnamed Stream is a concrete slab carrying SR 43 over Unnamed Stream in Lawrence County, Mississippi. It was built in 1956, so it is 69 years old, older than the Mississippi average of 38.9 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 800 vehicles a day, roughly 11% of them trucks, projected to reach 800 by 2043. The structure is 80 ft (24.4 m) long and 27 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesSR 43
CrossesUnnamed Stream
Location1.4 MI N SR 42
RouteState Highway 43
Coordinates31.75107, -89.97457
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.3 US tons
Inventory rating28.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2023)
Projected traffic800 by 2043
Trucks11%
Lanes on structure20
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$550 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 43 over Unnamed Stream built?

It was built in 1956, making it 69 years old in 2025.

What condition is SR 43 over Unnamed Stream 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 2024.

How much traffic does SR 43 over Unnamed Stream carry?

About 800 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 43 over Unnamed Stream?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 27 ft wide.

Who owns SR 43 over Unnamed Stream?

It is owned by the State Highway Agency.