US Bridges

I-474 RMP1.18 over WB I-474

Fair

Peoria County, Illinois · 2 MI W Sterling Ave · Structure no. 072011100000000

Built
1978
47 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
299 ft
3 main spans
Daily traffic
10,600
2023 count
Owner
State
State Highway Agency

About this bridge

I-474 RMP1.18 over WB I-474 is a steel stringer/multi-beam or girder carrying I-474 RMP1.18 over WB I-474 in Peoria County, Illinois. It was built in 1978, so it is 47 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 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 10,600 vehicles a day, roughly 6% of them trucks, projected to reach 13,938 by 2046. The structure is 299 ft (91.1 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesI-474 RMP1.18
CrossesWB I-474
Location2 MI W Sterling Ave
CountyPeoria County
StateIllinois
Coordinates40.73818, -89.67023
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2022
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 geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating65 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length299 ft (91.1 m)
Longest span153 ft (46.6 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,600 (2023)
Projected traffic13,938 by 2046
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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-474 RMP1.18 over WB I-474 built?

It was built in 1978, making it 47 years old in 2025.

What condition is I-474 RMP1.18 over WB I-474 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 December 2022.

How much traffic does I-474 RMP1.18 over WB I-474 carry?

About 10,600 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is I-474 RMP1.18 over WB I-474?

The structure is 299 ft (91.1 m) long with a longest span of 153 ft (46.6 m) and a deck 42 ft wide.

Who owns I-474 RMP1.18 over WB I-474?

It is owned by the State Highway Agency.