US Bridges

US 49 over Big Swamp Creek

GoodPosted for load

Covington County, Mississippi · 0.2 MI S SR 590 · Structure no. 21000490160901A

Built
1936
89 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Concrete
Length
90 ft
3 main spans
Daily traffic
10,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 49 over Big Swamp Creek is a concrete tee beam carrying US 49 over Big Swamp Creek in Covington County, Mississippi. It was built in 1936, so it is 89 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. Its operating status is: posted for load restriction.

It carries about 10,000 vehicles a day, roughly 21% of them trucks, projected to reach 12,500 by 2043. The structure is 90 ft (27.4 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 49
CrossesBig Swamp Creek
Location0.2 MI S SR 590
RouteU.S. Route 49
Coordinates31.56116, -89.51137
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating25 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2023)
Projected traffic12,500 by 2043
Trucks21%
Lanes on structure20
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$939 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 49 over Big Swamp Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is US 49 over Big Swamp 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 June 2023.

How much traffic does US 49 over Big Swamp Creek carry?

About 10,000 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is US 49 over Big Swamp Creek?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns US 49 over Big Swamp Creek?

It is owned by the State Highway Agency.