US Bridges

North Bolivar Coun over Natural Slough

PoorPosted for load

Sunflower County, Mississippi · Sec 19 T22N R 4W · Structure no. SA6700000000128

Built
1975
50 years old
Condition
Poor
inspected December 2024
Type
Channel Beam
Concrete
Length
76 ft
1 main span
Daily traffic
50
2013 count
Owner
County
County Highway Agency

About this bridge

North Bolivar Coun over Natural Slough is a concrete channel beam carrying North Bolivar Coun over Natural Slough in Sunflower County, Mississippi. It was built in 1975, so it is 50 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 8% of them trucks, projected to reach 75 by 2045. The structure is 76 ft (23.2 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNorth Bolivar Coun
CrossesNatural Slough
LocationSec 19 T22N R 4W
RouteCounty Highway 330
Coordinates33.75935, -90.65885
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating10.9 US tons
Inventory rating3 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1 (+3 approach)
Design loadH 15
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width29 ft (8.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2013)
Projected traffic75 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$506,000
NavigationNo navigation control on waterway

Frequently asked questions

When was North Bolivar Coun over Natural Slough built?

It was built in 1975, making it 50 years old in 2025.

What condition is North Bolivar Coun over Natural Slough in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does North Bolivar Coun over Natural Slough carry?

About 50 vehicles per day (2013 count), of which roughly 8% are trucks.

How long is North Bolivar Coun over Natural Slough?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.

Who owns North Bolivar Coun over Natural Slough?

It is owned by the County Highway Agency.