US Bridges

I-55 NB over Ramps & CH36

Good

McLean County, Illinois · Funks Grove Sec 16 · Structure no. 057015800000000

Built
1975
50 years old
Condition
Good
inspected March 2024
Type
Tee Beam
Concrete Continuous
Length
241 ft
3 main spans
Daily traffic
11,050
2023 count
Owner
State
State Highway Agency

About this bridge

I-55 NB over Ramps & CH36 is a concrete continuous tee beam carrying I-55 NB over Ramps & CH36 in McLean County, Illinois. It was built in 1975, so it is 50 years old, older than the Illinois average of 45.3 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.

It carries about 11,050 vehicles a day, roughly 37% of them trucks, projected to reach 11,615 by 2046. The structure is 241 ft (73.6 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-55 NB
CrossesRamps & CH36
LocationFunks Grove Sec 16
RouteInterstate 55
CountyMcLean County
StateIllinois
Coordinates40.36248, -89.1053
Functional classRural Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionMarch 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 rating57.1 US tons
Inventory rating34.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length241 ft (73.6 m)
Longest span60 ft (18.3 m)
Deck width52 ft (15.7 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,050 (2023)
Projected traffic11,615 by 2046
Trucks37%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-55 NB over Ramps & CH36 built?

It was built in 1975, making it 50 years old in 2025.

What condition is I-55 NB over Ramps & CH36 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 March 2024.

How much traffic does I-55 NB over Ramps & CH36 carry?

About 11,050 vehicles per day (2023 count), of which roughly 37% are trucks.

How long is I-55 NB over Ramps & CH36?

The structure is 241 ft (73.6 m) long with a longest span of 60 ft (18.3 m) and a deck 52 ft wide.

Who owns I-55 NB over Ramps & CH36?

It is owned by the State Highway Agency.