US Bridges

Lemoyne Blvd. over ST Martin Bayou

Good

Jackson County, Mississippi · Sec 16 T 7S R 9W · Structure no. SA3000000000128

Built
1989
36 years old
Condition
Good
inspected March 2024
Type
Channel Beam
Concrete
Length
69 ft
3 main spans
Daily traffic
14,000
2024 count
Owner
County
County Highway Agency

About this bridge

Lemoyne Blvd. over ST Martin Bayou is a concrete channel beam carrying Lemoyne Blvd. over ST Martin Bayou in Jackson County, Mississippi. It was built in 1989, so it is 36 years old, younger 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 14,000 vehicles a day, roughly 10% of them trucks, projected to reach 20,000 by 2044. The structure is 69 ft (21 m) long and 79 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLemoyne Blvd.
CrossesST Martin Bayou
LocationSec 16 T 7S R 9W
RouteCounty Highway 2316
Coordinates30.43809, -88.87995
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.6 US tons
Inventory rating41.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length69 ft (21 m)
Longest span31 ft (9.4 m)
Deck width79 ft (24.1 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,000 (2024)
Projected traffic20,000 by 2044
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lemoyne Blvd. over ST Martin Bayou built?

It was built in 1989, making it 36 years old in 2025.

What condition is Lemoyne Blvd. over ST Martin Bayou 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 March 2024.

How much traffic does Lemoyne Blvd. over ST Martin Bayou carry?

About 14,000 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Lemoyne Blvd. over ST Martin Bayou?

The structure is 69 ft (21 m) long with a longest span of 31 ft (9.4 m) and a deck 79 ft wide.

Who owns Lemoyne Blvd. over ST Martin Bayou?

It is owned by the County Highway Agency.