US Bridges

FAS-300 Catonfrmrd over E Aux Sable Creek

Fair

Kendall County, Illinois · CH23 Ovr Aux Sable · Structure no. 047301500000000

Built
1965
60 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
61 ft
2 main spans
Daily traffic
7,750
2024 count
Owner
County
County Highway Agency

About this bridge

FAS-300 Catonfrmrd over E Aux Sable Creek is a concrete continuous slab carrying FAS-300 Catonfrmrd over E Aux Sable Creek 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 7,750 vehicles a day, roughly 5% of them trucks, projected to reach 7,581 by 2046. The structure is 61 ft (18.7 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFAS-300 Catonfrmrd
CrossesE Aux Sable Creek
LocationCH23 Ovr Aux Sable
RouteCounty Highway 0
Coordinates41.56366, -88.30455
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 length61 ft (18.7 m)
Longest span29 ft (8.8 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,750 (2024)
Projected traffic7,581 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 FAS-300 Catonfrmrd over E Aux Sable Creek built?

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

What condition is FAS-300 Catonfrmrd over E Aux Sable Creek 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 FAS-300 Catonfrmrd over E Aux Sable Creek carry?

About 7,750 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is FAS-300 Catonfrmrd over E Aux Sable Creek?

The structure is 61 ft (18.7 m) long with a longest span of 29 ft (8.8 m) and a deck 28 ft wide.

Who owns FAS-300 Catonfrmrd over E Aux Sable Creek?

It is owned by the County Highway Agency.