US Bridges

Tatum Salt Dome over Lower Little River

Good

Lamar County, Mississippi · Sec 3 T 2N R16W · Structure no. SA3700000000011

Built
1995
30 years old
Condition
Good
inspected February 2023
Type
Channel Beam
Concrete
Length
267 ft
9 main spans
Daily traffic
300
2023 count
Owner
County
County Highway Agency

About this bridge

Tatum Salt Dome over Lower Little River is a concrete channel beam carrying Tatum Salt Dome over Lower Little River in Lamar County, Mississippi. It was built in 1995, so it is 30 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 300 vehicles a day, roughly 8% of them trucks, projected to reach 350 by 2045. The structure is 267 ft (81.4 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTatum Salt Dome
CrossesLower Little River
LocationSec 3 T 2N R16W
RouteCounty Highway 142
Coordinates31.16479, -89.58878
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionFebruary 2023
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 rating83.2 US tons
Inventory rating50 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans9
Design loadHS 20
Structure length267 ft (81.4 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2023)
Projected traffic350 by 2045
Trucks8%
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tatum Salt Dome over Lower Little River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Tatum Salt Dome over Lower Little River 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 February 2023.

How much traffic does Tatum Salt Dome over Lower Little River carry?

About 300 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Tatum Salt Dome over Lower Little River?

The structure is 267 ft (81.4 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns Tatum Salt Dome over Lower Little River?

It is owned by the County Highway Agency.