US Bridges

FAU 6093 Walnut ST over I-39/US 51

Fair

LaSalle County, Illinois · .78 MI W /Il 71/351 · Structure no. 050019900000000

Built
1985
40 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
237 ft
2 main spans
Daily traffic
5,600
2020 count
Owner
State
State Highway Agency

About this bridge

FAU 6093 Walnut ST over I-39/US 51 is a prestressed concrete stringer/multi-beam or girder carrying FAU 6093 Walnut ST over I-39/US 51 in LaSalle County, Illinois. It was built in 1985, so it is 40 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 5,600 vehicles a day, roughly 8% of them trucks, projected to reach 5,656 by 2046. The structure is 237 ft (72.2 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFAU 6093 Walnut ST
CrossesI-39/US 51
Location.78 MI W /Il 71/351
CountyLaSalle County
StateIllinois
Coordinates41.2952, -89.08261
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 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 geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating33.6 US tons
Inventory rating26.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length237 ft (72.2 m)
Longest span237 ft (72.2 m)
Deck width65 ft (19.9 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,600 (2020)
Projected traffic5,656 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 6093 Walnut ST over I-39/US 51 built?

It was built in 1985, making it 40 years old in 2025.

What condition is FAU 6093 Walnut ST over I-39/US 51 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 January 2023.

How much traffic does FAU 6093 Walnut ST over I-39/US 51 carry?

About 5,600 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is FAU 6093 Walnut ST over I-39/US 51?

The structure is 237 ft (72.2 m) long with a longest span of 237 ft (72.2 m) and a deck 65 ft wide.

Who owns FAU 6093 Walnut ST over I-39/US 51?

It is owned by the State Highway Agency.