US Bridges

Ch 54 over I-39/US 51

Fair

LaSalle County, Illinois · 0.54 W of Il 251 · Structure no. 050020400000000

Built
1988
37 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
228 ft
3 main spans
Daily traffic
—
2020 count
Owner
State
State Highway Agency

About this bridge

Ch 54 over I-39/US 51 is a steel continuous stringer/multi-beam or girder carrying Ch 54 over I-39/US 51 in LaSalle County, Illinois. It was built in 1988, so it is 37 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.

No traffic count is recorded. The structure is 228 ft (69.5 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCh 54
CrossesI-39/US 51
Location0.54 W of Il 251
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.22135, -89.07777
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.4 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length228 ft (69.5 m)
Longest span165 ft (50.3 m)
Deck width65 ft (19.8 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic556 by 2046
Trucks0%
Lanes on structure4
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ch 54 over I-39/US 51 built?

It was built in 1988, making it 37 years old in 2025.

What condition is Ch 54 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 March 2023.

How much traffic does Ch 54 over I-39/US 51 carry?

No traffic count is recorded for this structure.

How long is Ch 54 over I-39/US 51?

The structure is 228 ft (69.5 m) long with a longest span of 165 ft (50.3 m) and a deck 65 ft wide.

Who owns Ch 54 over I-39/US 51?

It is owned by the State Highway Agency.