US Bridges

Martin Road over Relief Tangipahoa River

Good

Pike County, Mississippi · Sec 17 T 3N R 7E · Structure no. SA5700000000105

Built
1996
29 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
150
2021 count
Owner
County
County Highway Agency

About this bridge

Martin Road over Relief Tangipahoa River is a concrete culvert carrying Martin Road over Relief Tangipahoa River in Pike County, Mississippi. It was built in 1996, so it is 29 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 150 vehicles a day, roughly 8% of them trucks, projected to reach 190 by 2043. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMartin Road
CrossesRelief Tangipahoa River
LocationSec 17 T 3N R 7E
RouteCounty Highway 31
Coordinates31.226, -90.53242
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.8 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic190 by 2043
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$224,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Martin Road over Relief Tangipahoa River built?

It was built in 1996, making it 29 years old in 2025.

What condition is Martin Road over Relief Tangipahoa 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 December 2023.

How much traffic does Martin Road over Relief Tangipahoa River carry?

About 150 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Martin Road over Relief Tangipahoa River?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Martin Road over Relief Tangipahoa River?

It is owned by the County Highway Agency.