US Bridges

Caton Farm Road over Mid. Aux Sable Cr.

Fair

Kendall County, Illinois · CH23 Ovr Aux Sable · Structure no. 047301300000000

Built
1965
60 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
69 ft
2 main spans
Daily traffic
2,250
2024 count
Owner
County
County Highway Agency

About this bridge

Caton Farm Road over Mid. Aux Sable Cr. is a concrete continuous slab carrying Caton Farm Road over Mid. Aux Sable Cr. in Kendall County, Illinois. It was built in 1965, so it is 60 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 5 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 2,250 vehicles a day, roughly 11% of them trucks, projected to reach 2,860 by 2046. The structure is 69 ft (21 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCaton Farm Road
CrossesMid. Aux Sable Cr.
LocationCH23 Ovr Aux Sable
RouteCounty Highway 0
CountyKendall County
StateIllinois
Coordinates41.5629, -88.34782
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length69 ft (21 m)
Longest span33 ft (10.1 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,250 (2024)
Projected traffic2,860 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Caton Farm Road over Mid. Aux Sable Cr. built?

It was built in 1965, making it 60 years old in 2025.

What condition is Caton Farm Road over Mid. Aux Sable Cr. 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 December 2023.

How much traffic does Caton Farm Road over Mid. Aux Sable Cr. carry?

About 2,250 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Caton Farm Road over Mid. Aux Sable Cr.?

The structure is 69 ft (21 m) long with a longest span of 33 ft (10.1 m) and a deck 28 ft wide.

Who owns Caton Farm Road over Mid. Aux Sable Cr.?

It is owned by the County Highway Agency.