US Bridges

Plymouth Bluff Rd. over Oak Slush Creek

Fair

Lowndes County, Mississippi · Sec 23 T19N R17E B · Structure no. SA4400000000108

Built
1987
38 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
164 ft
5 main spans
Daily traffic
780
2022 count
Owner
County
County Highway Agency

About this bridge

Plymouth Bluff Rd. over Oak Slush Creek is a prestressed concrete stringer/multi-beam or girder carrying Plymouth Bluff Rd. over Oak Slush Creek in Lowndes County, Mississippi. It was built in 1987, so it is 38 years old, younger 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 780 vehicles a day, roughly 8% of them trucks, projected to reach 1,170 by 2044. The structure is 164 ft (50 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesPlymouth Bluff Rd.
CrossesOak Slush Creek
LocationSec 23 T19N R17E B
RouteCounty Highway 1712
Coordinates33.49488, -88.4925
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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 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 rating64.7 US tons
Inventory rating37.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length164 ft (50 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic780 (2022)
Projected traffic1,170 by 2044
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Plymouth Bluff Rd. over Oak Slush Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Plymouth Bluff Rd. over Oak Slush Creek 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 February 2024.

How much traffic does Plymouth Bluff Rd. over Oak Slush Creek carry?

About 780 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Plymouth Bluff Rd. over Oak Slush Creek?

The structure is 164 ft (50 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns Plymouth Bluff Rd. over Oak Slush Creek?

It is owned by the County Highway Agency.