US Bridges

Robb Street over I 55

GoodPosted for load

Pike County, Mississippi · 1.7 MI N SR 570 · Structure no. 510005505701970

Built
1959
66 years old
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
227 ft
4 main spans
Daily traffic
900
2023 count
Owner
State
State Highway Agency

About this bridge

Robb Street over I 55 is a concrete continuous box beam or girders - single or spread carrying Robb Street over I 55 in Pike 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 900 vehicles a day, roughly 6% of them trucks, projected to reach 1,100 by 2043. The structure is 227 ft (69.2 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRobb Street
CrossesI 55
Location1.7 MI N SR 570
RouteCity Street 0
Coordinates31.28419, -90.47915
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusPosted for load 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 rating40 US tons
Inventory rating24 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length227 ft (69.2 m)
Longest span67 ft (20.4 m)
Deck width34 ft (10.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2023)
Projected traffic1,100 by 2043
Trucks6%
Lanes on structure20
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Robb Street over I 55 built?

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

What condition is Robb Street over I 55 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does Robb Street over I 55 carry?

About 900 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Robb Street 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 34 ft wide.

Who owns Robb Street over I 55?

It is owned by the State Highway Agency.