US Bridges

US 98 over Tangipahoa River

Good

Pike County, Mississippi · 4.0 MI W I 55 · Structure no. 210009805706820

Built
1959
66 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
3 main spans
Daily traffic
3,300
2023 count
Owner
State
State Highway Agency

About this bridge

US 98 over Tangipahoa River is a steel stringer/multi-beam or girder carrying US 98 over Tangipahoa River in Pike County, Mississippi. It was built in 1959, so it is 66 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 3,300 vehicles a day, roughly 14% of them trucks, projected to reach 3,800 by 2043. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesUS 98
CrossesTangipahoa River
Location4.0 MI W I 55
RouteU.S. Route 98
Coordinates31.32149, -90.53949
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.3 US tons
Inventory rating28.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2023)
Projected traffic3,800 by 2043
Trucks14%
Lanes on structure20
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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$490 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 98 over Tangipahoa River built?

It was built in 1959, making it 66 years old in 2025.

What condition is US 98 over 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 2024.

How much traffic does US 98 over Tangipahoa River carry?

About 3,300 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is US 98 over Tangipahoa River?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.

Who owns US 98 over Tangipahoa River?

It is owned by the State Highway Agency.