US Bridges

FAU6046 E18th RD over FAI 80

Fair

LaSalle County, Illinois · 1.0 MI E of Ill 23 · Structure no. 050008900000000

Built
1959
66 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
212 ft
4 main spans
Daily traffic
2,100
2020 count
Owner
State
State Highway Agency

About this bridge

FAU6046 E18th RD over FAI 80 is a prestressed concrete stringer/multi-beam or girder carrying FAU6046 E18th RD over FAI 80 in LaSalle County, Illinois. It was built in 1959, so it is 66 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 2,100 vehicles a day, roughly 5% of them trucks, projected to reach 2,121 by 2046. The structure is 212 ft (64.7 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesFAU6046 E18th RD
CrossesFAI 80
Location1.0 MI E of Ill 23
CountyLaSalle County
StateIllinois
Coordinates41.37629, -88.81681
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating77.8 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length212 ft (64.7 m)
Longest span60 ft (18.2 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2020)
Projected traffic2,121 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU6046 E18th RD over FAI 80 built?

It was built in 1959, making it 66 years old in 2025.

What condition is FAU6046 E18th RD over FAI 80 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 March 2024.

How much traffic does FAU6046 E18th RD over FAI 80 carry?

About 2,100 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is FAU6046 E18th RD over FAI 80?

The structure is 212 ft (64.7 m) long with a longest span of 60 ft (18.2 m) and a deck 32 ft wide.

Who owns FAU6046 E18th RD over FAI 80?

It is owned by the State Highway Agency.