US Bridges

Jim Ramsay RD over Costapia Bayou

Fair

Jackson County, Mississippi · Sec 24 T 6S R 9W B · Structure no. SA3000000000085

Built
1991
34 years old
Condition
Fair
inspected November 2024
Type
Channel Beam
Concrete
Length
133 ft
7 main spans
Daily traffic
410
2024 count
Owner
County
County Highway Agency

About this bridge

Jim Ramsay RD over Costapia Bayou is a concrete channel beam carrying Jim Ramsay RD over Costapia Bayou in Jackson County, Mississippi. It was built in 1991, so it is 34 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 410 vehicles a day, roughly 15% of them trucks, projected to reach 615 by 2044. The structure is 133 ft (40.5 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesJim Ramsay RD
CrossesCostapia Bayou
LocationSec 24 T 6S R 9W B
RouteCounty Highway 1139
Coordinates30.50668, -88.84705
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 12 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating47.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadH 20
Structure length133 ft (40.5 m)
Longest span19 ft (5.8 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2024)
Projected traffic615 by 2044
Trucks15%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Jim Ramsay RD over Costapia Bayou built?

It was built in 1991, making it 34 years old in 2025.

What condition is Jim Ramsay RD over Costapia 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 November 2024.

How much traffic does Jim Ramsay RD over Costapia Bayou carry?

About 410 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Jim Ramsay RD over Costapia Bayou?

The structure is 133 ft (40.5 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.

Who owns Jim Ramsay RD over Costapia Bayou?

It is owned by the County Highway Agency.