US Bridges

Interstate 57 NB over 7th ST

Fair

Franklin County, Illinois · At Ncl W. Frankfort · Structure no. 028007900000000

Built
2012
13 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
184 ft
2 main spans
Daily traffic
18,600
2023 count
Owner
State
State Highway Agency

About this bridge

Interstate 57 NB over 7th ST is a steel continuous stringer/multi-beam or girder carrying Interstate 57 NB over 7th ST in Franklin County, Illinois. It was built in 2012, so it is 13 years old, younger than the Illinois average of 45.3 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 18,600 vehicles a day, roughly 39% of them trucks, projected to reach 20,200 by 2046. The structure is 184 ft (56.2 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesInterstate 57 NB
Crosses7th ST
LocationAt Ncl W. Frankfort
RouteInterstate 57
CountyFranklin County
StateIllinois
Coordinates37.90815, -88.94642
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.2 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length184 ft (56.2 m)
Longest span91 ft (27.7 m)
Deck width63 ft (19.1 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,600 (2023)
Projected traffic20,200 by 2046
Trucks39%
Lanes on structure2
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 Interstate 57 NB over 7th ST built?

It was built in 2012, making it 13 years old in 2025.

What condition is Interstate 57 NB over 7th ST 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 April 2024.

How much traffic does Interstate 57 NB over 7th ST carry?

About 18,600 vehicles per day (2023 count), of which roughly 39% are trucks.

How long is Interstate 57 NB over 7th ST?

The structure is 184 ft (56.2 m) long with a longest span of 91 ft (27.7 m) and a deck 63 ft wide.

Who owns Interstate 57 NB over 7th ST?

It is owned by the State Highway Agency.