US Bridges

I 55 over Mcdowell Road

Fair

Hinds County, Mississippi · 0.6 MI S JCT I55S I20W · Structure no. 110005502509070

Built
1969
56 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
220 ft
3 main spans
Daily traffic
49,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 55 over Mcdowell Road is a steel continuous stringer/multi-beam or girder carrying I 55 over Mcdowell Road in Hinds County, Mississippi. It was built in 1969, so it is 56 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 49,000 vehicles a day, roughly 12% of them trucks, projected to reach 53,000 by 2043. The structure is 220 ft (67.1 m) long and 118 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 55
CrossesMcdowell Road
Location0.6 MI S JCT I55S I20W
RouteInterstate 55
CountyHinds County
StateMississippi
Coordinates32.268, -90.21009
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.7 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length220 ft (67.1 m)
Longest span100 ft (30.5 m)
Deck width118 ft (35.9 m)
Roadway width113 ft (34.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49,000 (2023)
Projected traffic53,000 by 2043
Trucks12%
Lanes on structure7
Traffic directionTwo-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 Mcdowell Road built?

It was built in 1969, making it 56 years old in 2025.

What condition is I 55 over Mcdowell Road 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 Mcdowell Road carry?

About 49,000 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is I 55 over Mcdowell Road?

The structure is 220 ft (67.1 m) long with a longest span of 100 ft (30.5 m) and a deck 118 ft wide.

Who owns I 55 over Mcdowell Road?

It is owned by the State Highway Agency.