US Bridges

Sandpit Road over Bch of Porter Bayou

Fair

Bolivar County, Mississippi · Sec 27 T21N R 5W · Structure no. SA0600000000029

Built
1979
46 years old, rebuilt 2021
Condition
Fair
inspected January 2023
Type
Channel Beam
Concrete
Length
57 ft
3 main spans
Daily traffic
180
2022 count
Owner
County
County Highway Agency

About this bridge

Sandpit Road over Bch of Porter Bayou is a concrete channel beam carrying Sandpit Road over Bch of Porter Bayou in Bolivar County, Mississippi. It was built in 1979 and reconstructed in 2021, so it is 46 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 180 vehicles a day, roughly 8% of them trucks, projected to reach 270 by 2042. The structure is 57 ft (17.4 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSandpit Road
CrossesBch of Porter Bayou
LocationSec 27 T21N R 5W
RouteCounty Highway 445
CountyBolivar County
StateMississippi
Coordinates33.631, -90.70989
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating38.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2022)
Projected traffic270 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$208,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sandpit Road over Bch of Porter Bayou built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 2021.

What condition is Sandpit Road over Bch of Porter Bayou in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2023.

How much traffic does Sandpit Road over Bch of Porter Bayou carry?

About 180 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sandpit Road over Bch of Porter Bayou?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Sandpit Road over Bch of Porter Bayou?

It is owned by the County Highway Agency.