US Bridges

Enterprise Road over Tangipahoa River

Good

Pike County, Mississippi · Sec 7 T 3N R 7E B · Structure no. SA5700000000097

Built
1976
49 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
320 ft
7 main spans
Daily traffic
250
2021 count
Owner
County
County Highway Agency

About this bridge

Enterprise Road over Tangipahoa River is a prestressed concrete stringer/multi-beam or girder carrying Enterprise Road over Tangipahoa River in Pike County, Mississippi. It was built in 1976, so it is 49 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 250 vehicles a day, roughly 8% of them trucks, projected to reach 367 by 2043. The structure is 320 ft (97.5 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesEnterprise Road
CrossesTangipahoa River
LocationSec 7 T 3N R 7E B
RouteCounty Highway 20
Coordinates31.23628, -90.53792
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.1 US tons
Inventory rating30.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 15
Structure length320 ft (97.5 m)
Longest span80 ft (24.4 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2021)
Projected traffic367 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$1.8 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Enterprise Road over Tangipahoa River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Enterprise Road 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 April 2023.

How much traffic does Enterprise Road over Tangipahoa River carry?

About 250 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Enterprise Road over Tangipahoa River?

The structure is 320 ft (97.5 m) long with a longest span of 80 ft (24.4 m) and a deck 29 ft wide.

Who owns Enterprise Road over Tangipahoa River?

It is owned by the County Highway Agency.