US Bridges

CH-11 (fas 666) over Stream

Fair

Douglas County, Illinois · 1.86 MI W of Arcola · Structure no. 021462100000000

Built
1971
54 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
1,300
2022 count
Owner
County
County Highway Agency

About this bridge

CH-11 (fas 666) over Stream is a prestressed concrete box beam or girders - multiple carrying CH-11 (fas 666) over Stream in Douglas County, Illinois. It was built in 1971, so it is 54 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 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 1,300 vehicles a day, roughly 14% of them trucks, projected to reach 1,010 by 2046. The structure is 58 ft (17.6 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCH-11 (fas 666)
CrossesStream
Location1.86 MI W of Arcola
RouteCounty Highway 0
CountyDouglas County
StateIllinois
Coordinates39.68089, -88.3557
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating26.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length58 ft (17.6 m)
Longest span55 ft (16.7 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2022)
Projected traffic1,010 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 CH-11 (fas 666) over Stream built?

It was built in 1971, making it 54 years old in 2025.

What condition is CH-11 (fas 666) over Stream 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 February 2025.

How much traffic does CH-11 (fas 666) over Stream carry?

About 1,300 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is CH-11 (fas 666) over Stream?

The structure is 58 ft (17.6 m) long with a longest span of 55 ft (16.7 m) and a deck 27 ft wide.

Who owns CH-11 (fas 666) over Stream?

It is owned by the County Highway Agency.