US Bridges

Raab RD (fau 6346) over I-55 & I-74

Fair

McLean County, Illinois · 3 MI N of Ill 9 · Structure no. 057022300000000

Built
1990
35 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
317 ft
2 main spans
Daily traffic
4,650
2024 count
Owner
State
State Highway Agency

About this bridge

Raab RD (fau 6346) over I-55 & I-74 is a steel continuous stringer/multi-beam or girder carrying Raab RD (fau 6346) over I-55 & I-74 in McLean County, Illinois. It was built in 1990, so it is 35 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 4,650 vehicles a day, roughly 2% of them trucks, projected to reach 3,030 by 2046. The structure is 317 ft (96.7 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesRaab RD (fau 6346)
CrossesI-55 & I-74
Location3 MI N of Ill 9
CountyMcLean County
StateIllinois
Coordinates40.53102, -89.02721
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+1 approach)
Design loadHS 20
Structure length317 ft (96.7 m)
Longest span177 ft (53.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,650 (2024)
Projected traffic3,030 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 Raab RD (fau 6346) over I-55 & I-74 built?

It was built in 1990, making it 35 years old in 2025.

What condition is Raab RD (fau 6346) over I-55 & I-74 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 Raab RD (fau 6346) over I-55 & I-74 carry?

About 4,650 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Raab RD (fau 6346) over I-55 & I-74?

The structure is 317 ft (96.7 m) long with a longest span of 177 ft (53.8 m) and a deck 43 ft wide.

Who owns Raab RD (fau 6346) over I-55 & I-74?

It is owned by the State Highway Agency.