US Bridges

WB I-474 over US 24 (s. Adams St.)

Fair

Peoria County, Illinois · 0.5 MI S of Peoria · Structure no. 072013000000000

Built
1978
47 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
216 ft
4 main spans
Daily traffic
12,800
2023 count
Owner
State
State Highway Agency

About this bridge

WB I-474 over US 24 (s. Adams St.) is a steel continuous stringer/multi-beam or girder carrying WB I-474 over US 24 (s. Adams St.) 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 12,800 vehicles a day, roughly 14% of them trucks, projected to reach 14,039 by 2046. The structure is 216 ft (65.8 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWB I-474
CrossesUS 24 (s. Adams St.)
Location0.5 MI S of Peoria
RouteInterstate 474
CountyPeoria County
StateIllinois
Coordinates40.65653, -89.64364
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
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 rating90.7 US tons
Inventory rating52.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length216 ft (65.8 m)
Longest span70 ft (21.3 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,800 (2023)
Projected traffic14,039 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was WB I-474 over US 24 (s. Adams St.) built?

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

What condition is WB I-474 over US 24 (s. Adams St.) 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 November 2023.

How much traffic does WB I-474 over US 24 (s. Adams St.) carry?

About 12,800 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is WB I-474 over US 24 (s. Adams St.)?

The structure is 216 ft (65.8 m) long with a longest span of 70 ft (21.3 m) and a deck 42 ft wide.

Who owns WB I-474 over US 24 (s. Adams St.)?

It is owned by the State Highway Agency.