US Bridges

I-180 SB over Il 26 FAP 615

Fair

Bureau County, Illinois · 2 MI NW Bureau JCT · Structure no. 006004500000000

Built
1968
57 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
213 ft
2 main spans
Daily traffic
2,075
2023 count
Owner
State
State Highway Agency

About this bridge

I-180 SB over Il 26 FAP 615 is a prestressed concrete stringer/multi-beam or girder carrying I-180 SB over Il 26 FAP 615 in Bureau County, Illinois. It was built in 1968, so it is 57 years old, older 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 2,075 vehicles a day, roughly 23% of them trucks, projected to reach 2,292 by 2035. The structure is 213 ft (64.8 m) long and 43 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesI-180 SB
CrossesIl 26 FAP 615
Location2 MI NW Bureau JCT
RouteInterstate 180
CountyBureau County
StateIllinois
Coordinates41.31603, -89.39342
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length213 ft (64.8 m)
Longest span66 ft (20 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic2,075 (2023)
Projected traffic2,292 by 2035
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed11.8 mi (19 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 I-180 SB over Il 26 FAP 615 built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-180 SB over Il 26 FAP 615 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 2025.

How much traffic does I-180 SB over Il 26 FAP 615 carry?

About 2,075 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I-180 SB over Il 26 FAP 615?

The structure is 213 ft (64.8 m) long with a longest span of 66 ft (20 m) and a deck 43 ft wide.

Who owns I-180 SB over Il 26 FAP 615?

It is owned by the State Highway Agency.