US Bridges

Florence-Byram Rd. over Pearl River Relief

Fair

Rankin County, Mississippi · Sec 20 T 4N R 1E B · Structure no. SA6100000000052

Built
1988
37 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
400 ft
10 main spans
Daily traffic
7,300
2024 count
Owner
County
County Highway Agency

About this bridge

Florence-Byram Rd. over Pearl River Relief is a prestressed concrete stringer/multi-beam or girder carrying Florence-Byram Rd. over Pearl River Relief in Rankin County, Mississippi. It was built in 1988, so it is 37 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 7,300 vehicles a day, roughly 8% of them trucks, projected to reach 10,950 by 2044. The structure is 400 ft (121.9 m) long and 33 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesFlorence-Byram Rd.
CrossesPearl River Relief
LocationSec 20 T 4N R 1E B
RouteCounty Highway 425
Coordinates32.16928, -90.22749
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 protection8 Very GoodNo problems noted.
Last inspectionOctober 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating41.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length400 ft (121.9 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,300 (2024)
Projected traffic10,950 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed19.9 mi (32 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$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Florence-Byram Rd. over Pearl River Relief built?

It was built in 1988, making it 37 years old in 2025.

What condition is Florence-Byram Rd. over Pearl River Relief 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 October 2024.

How much traffic does Florence-Byram Rd. over Pearl River Relief carry?

About 7,300 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Florence-Byram Rd. over Pearl River Relief?

The structure is 400 ft (121.9 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns Florence-Byram Rd. over Pearl River Relief?

It is owned by the County Highway Agency.