US Bridges

Ch 11(FAS 666) over Drainage Ditch

Good

Douglas County, Illinois · 2.5 MI S of Arthur · Structure no. 021454700000000

Built
2007
18 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
1,150
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 11(FAS 666) over Drainage Ditch is a steel stringer/multi-beam or girder carrying Ch 11(FAS 666) over Drainage Ditch in Douglas County, Illinois. It was built in 2007, so it is 18 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,150 vehicles a day, roughly 11% of them trucks, projected to reach 960 by 2046. The structure is 65 ft (19.8 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCh 11(FAS 666)
CrossesDrainage Ditch
Location2.5 MI S of Arthur
RouteCounty Highway 0
CountyDouglas County
StateIllinois
Coordinates39.6807, -88.46626
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span62 ft (18.9 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2022)
Projected traffic960 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Drainage Ditch built?

It was built in 2007, making it 18 years old in 2025.

What condition is Ch 11(FAS 666) over Drainage Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.

How much traffic does Ch 11(FAS 666) over Drainage Ditch carry?

About 1,150 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Ch 11(FAS 666) over Drainage Ditch?

The structure is 65 ft (19.8 m) long with a longest span of 62 ft (18.9 m) and a deck 42 ft wide.

Who owns Ch 11(FAS 666) over Drainage Ditch?

It is owned by the County Highway Agency.