US Bridges

I-155NB over I-74

Fair

Tazewell County, Illinois · I-155/74INTERCHANGE · Structure no. 090016600000000

Built
2016
9 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
231 ft
2 main spans
Daily traffic
11,400
2023 count
Owner
State
State Highway Agency

About this bridge

I-155NB over I-74 is a steel continuous stringer/multi-beam or girder carrying I-155NB over I-74 in Tazewell County, Illinois. It was built in 2016, so it is 9 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 11,400 vehicles a day, roughly 14% of them trucks, projected to reach 10,908 by 2046. The structure is 231 ft (70.4 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-155NB
CrossesI-74
LocationI-155/74INTERCHANGE
RouteInterstate 155
CountyTazewell County
StateIllinois
Coordinates40.6202, -89.48386
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length231 ft (70.4 m)
Longest span121 ft (36.9 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,400 (2023)
Projected traffic10,908 by 2046
Trucks14%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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-155NB over I-74 built?

It was built in 2016, making it 9 years old in 2025.

What condition is I-155NB over I-74 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 May 2024.

How much traffic does I-155NB over I-74 carry?

About 11,400 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is I-155NB over I-74?

The structure is 231 ft (70.4 m) long with a longest span of 121 ft (36.9 m) and a deck 34 ft wide.

Who owns I-155NB over I-74?

It is owned by the State Highway Agency.