US Bridges

Old Byram Road over I 55

Fair

Hinds County, Mississippi · 4.9 MI S JCT I55S I20W · Structure no. 410005502508640

Built
1959
66 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
227 ft
4 main spans
Daily traffic
2,100
2023 count
Owner
State
State Highway Agency

About this bridge

Old Byram Road over I 55 is a concrete continuous box beam or girders - single or spread carrying Old Byram Road over I 55 in Hinds County, Mississippi. It was built in 1959, so it is 66 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 5 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 2,100 vehicles a day, roughly 6% of them trucks, projected to reach 2,600 by 2043. The structure is 227 ft (69.2 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOld Byram Road
CrossesI 55
Location4.9 MI S JCT I55S I20W
RouteCounty Highway 0
CountyHinds County
StateMississippi
Coordinates32.21022, -90.23594
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating22.5 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length227 ft (69.2 m)
Longest span67 ft (20.4 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2023)
Projected traffic2,600 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$1,000 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Old Byram Road over I 55 built?

It was built in 1959, making it 66 years old in 2025.

What condition is Old Byram Road over I 55 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 June 2024.

How much traffic does Old Byram Road over I 55 carry?

About 2,100 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Old Byram Road over I 55?

The structure is 227 ft (69.2 m) long with a longest span of 67 ft (20.4 m) and a deck 30 ft wide.

Who owns Old Byram Road over I 55?

It is owned by the State Highway Agency.