US Bridges

EB I-74 over Altorfer ST

Fair

Tazewell County, Illinois · .25 MI W of Ill 116 · Structure no. 090015800000000

Built
2005
20 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
192 ft
3 main spans
Daily traffic
57,000
2023 count
Owner
State
State Highway Agency

About this bridge

EB I-74 over Altorfer ST is a prestressed concrete continuous stringer/multi-beam or girder carrying EB I-74 over Altorfer ST in Tazewell County, Illinois. It was built in 2005, so it is 20 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 57,000 vehicles a day, roughly 7% of them trucks, projected to reach 52,621 by 2046. The structure is 192 ft (58.5 m) long and 98 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesEB I-74
CrossesAltorfer ST
Location.25 MI W of Ill 116
RouteInterstate 74
CountyTazewell County
StateIllinois
Coordinates40.67224, -89.57522
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating94.2 US tons
Inventory rating58.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length192 ft (58.5 m)
Longest span84 ft (25.7 m)
Deck width98 ft (30 m)
Roadway width95 ft (29.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,000 (2023)
Projected traffic52,621 by 2046
Trucks7%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
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 EB I-74 over Altorfer ST built?

It was built in 2005, making it 20 years old in 2025.

What condition is EB I-74 over Altorfer 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 April 2023.

How much traffic does EB I-74 over Altorfer ST carry?

About 57,000 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is EB I-74 over Altorfer ST?

The structure is 192 ft (58.5 m) long with a longest span of 84 ft (25.7 m) and a deck 98 ft wide.

Who owns EB I-74 over Altorfer ST?

It is owned by the State Highway Agency.