US Bridges

County Line Road over Tangipahoa River

Good

Amite County, Mississippi · Sec 24 T 4N R 6E · Structure no. SA0300000000189

Built
1997
28 years old
Condition
Good
inspected January 2024
Type
Channel Beam
Concrete
Length
93 ft
3 main spans
Daily traffic
80
2022 count
Owner
County
County Highway Agency

About this bridge

County Line Road over Tangipahoa River is a concrete channel beam carrying County Line Road over Tangipahoa River in Amite County, Mississippi. It was built in 1997, so it is 28 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 80 vehicles a day, projected to reach 120 by 2044. The structure is 93 ft (28.3 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Line Road
CrossesTangipahoa River
LocationSec 24 T 4N R 6E
RouteCounty Highway 185
CountyAmite County
StateMississippi
Coordinates31.29341, -90.55286
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.9 US tons
Inventory rating39.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length93 ft (28.3 m)
Longest span31 ft (9.4 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2022)
Projected traffic120 by 2044
Trucks—
Lanes on structure2
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 County Line Road over Tangipahoa River built?

It was built in 1997, making it 28 years old in 2025.

What condition is County Line 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 January 2024.

How much traffic does County Line Road over Tangipahoa River carry?

About 80 vehicles per day (2022 count).

How long is County Line Road over Tangipahoa River?

The structure is 93 ft (28.3 m) long with a longest span of 31 ft (9.4 m) and a deck 25 ft wide.

Who owns County Line Road over Tangipahoa River?

It is owned by the County Highway Agency.