US Bridges

I 55 over High Street

Fair

Hinds County, Mississippi · 1.9 MI N JCT I 55 I 20 · Structure no. 11000550250951A

Built
1967
58 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
287 ft
4 main spans
Daily traffic
48,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 55 over High Street is a prestressed concrete stringer/multi-beam or girder carrying I 55 over High Street in Hinds County, Mississippi. It was built in 1967, so it is 58 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 48,500 vehicles a day, roughly 8% of them trucks, projected to reach 50,000 by 2043. The structure is 287 ft (87.5 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 55
CrossesHigh Street
Location1.9 MI N JCT I 55 I 20
RouteInterstate 55
Coordinates32.30326, -90.16648
Functional classUrban Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.5 US tons
Inventory rating38.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHS 20 + Mod
Structure length287 ft (87.5 m)
Longest span51 ft (15.5 m)
Deck width59 ft (18.1 m)
Roadway width55 ft (16.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,500 (2023)
Projected traffic50,000 by 2043
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 55 over High Street built?

It was built in 1967, making it 58 years old in 2025.

What condition is I 55 over High Street 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 I 55 over High Street carry?

About 48,500 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is I 55 over High Street?

The structure is 287 ft (87.5 m) long with a longest span of 51 ft (15.5 m) and a deck 59 ft wide.

Who owns I 55 over High Street?

It is owned by the State Highway Agency.