US Bridges

Dellos RD over Aux Sable CR

Fair

Will County, Illinois · 6 MI NE Morris · Structure no. 032392500000000

Built
1873
152 years old, rebuilt 1967
Condition
Fair
inspected June 2023
Type
Arch - Deck
Concrete
Length
122 ft
3 main spans
Daily traffic
200
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dellos RD over Aux Sable CR is a concrete arch - deck carrying Dellos RD over Aux Sable CR in Will County, Illinois. It was built in 1873 and reconstructed in 1967, so it is 152 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 200 vehicles a day, roughly 71% of them trucks, projected to reach 270 by 2046. The structure is 122 ft (37.2 m) long and 22 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesDellos RD
CrossesAux Sable CR
Location6 MI NE Morris
RouteCity Street 0
CountyWill County
StateIllinois
Coordinates41.39651, -88.33084
Functional classUrban 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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckOther
Main spans3
Design loadUnknown
Structure length122 ft (37.2 m)
Longest span35 ft (10.7 m)
Deck width22 ft (6.7 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2024)
Projected traffic270 by 2046
Trucks71%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dellos RD over Aux Sable CR built?

It was built in 1873, making it 152 years old in 2025. It was reconstructed in 1967.

What condition is Dellos RD over 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 June 2023.

How much traffic does Dellos RD over Aux Sable CR carry?

About 200 vehicles per day (2024 count), of which roughly 71% are trucks.

How long is Dellos RD over Aux Sable CR?

The structure is 122 ft (37.2 m) long with a longest span of 35 ft (10.7 m) and a deck 22 ft wide.

Who owns Dellos RD over Aux Sable CR?

It is owned by the City or Municipal Highway Agency.