US Bridges

Morton Marathon RD over Barber Creek

Fair

Scott County, Mississippi · Sec 25 T 5N R 7E B · Structure no. SA6200000000020

Built
1976
49 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
93 ft
3 main spans
Daily traffic
410
2024 count
Owner
County
County Highway Agency

About this bridge

Morton Marathon RD over Barber Creek is a prestressed concrete stringer/multi-beam or girder carrying Morton Marathon RD over Barber Creek in Scott 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 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 410 vehicles a day, roughly 8% of them trucks, projected to reach 550 by 2045. The structure is 93 ft (28.3 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMorton Marathon RD
CrossesBarber Creek
LocationSec 25 T 5N R 7E B
RouteCounty Highway 484
Coordinates32.24776, -89.53292
Functional classRural Major 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 12 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating40 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length93 ft (28.3 m)
Longest span31 ft (9.4 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2024)
Projected traffic550 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$510,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Morton Marathon RD over Barber Creek built?

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

What condition is Morton Marathon RD over Barber 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 November 2024.

How much traffic does Morton Marathon RD over Barber Creek carry?

About 410 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Morton Marathon RD over Barber Creek?

The structure is 93 ft (28.3 m) long with a longest span of 31 ft (9.4 m) and a deck 29 ft wide.

Who owns Morton Marathon RD over Barber Creek?

It is owned by the County Highway Agency.