US Bridges

NB I-155 over Il 98

Fair

Tazewell County, Illinois · 1.2 MI S of I-74 · Structure no. 090012900000000

Built
1988
37 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
182 ft
2 main spans
Daily traffic
9,800
2023 count
Owner
State
State Highway Agency

About this bridge

NB I-155 over Il 98 is a steel continuous stringer/multi-beam or girder carrying NB I-155 over Il 98 in Tazewell County, Illinois. It was built in 1988, so it is 37 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 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 9,800 vehicles a day, roughly 14% of them trucks, projected to reach 9,646 by 2046. The structure is 182 ft (55.5 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB I-155
CrossesIl 98
Location1.2 MI S of I-74
RouteInterstate 155
CountyTazewell County
StateIllinois
Coordinates40.60419, -89.4782
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 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 alignment6: Equal to present minimum criteria
Operating rating71.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length182 ft (55.5 m)
Longest span73 ft (22.4 m)
Deck width48 ft (14.5 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,800 (2023)
Projected traffic9,646 by 2046
Trucks14%
Lanes on structure2
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 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 NB I-155 over Il 98 built?

It was built in 1988, making it 37 years old in 2025.

What condition is NB I-155 over Il 98 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 January 2024.

How much traffic does NB I-155 over Il 98 carry?

About 9,800 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is NB I-155 over Il 98?

The structure is 182 ft (55.5 m) long with a longest span of 73 ft (22.4 m) and a deck 48 ft wide.

Who owns NB I-155 over Il 98?

It is owned by the State Highway Agency.