US Bridges

Duck Road over Elkhorn Creek

Fair

Carroll County, Illinois · 1 MI NE Milledgevill · Structure no. 008422600000000

Built
2000
25 years old
Condition
Fair
inspected August 2024
Type
Channel Beam
Concrete
Length
105 ft
3 main spans
Daily traffic
50
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Duck Road over Elkhorn Creek is a concrete channel beam carrying Duck Road over Elkhorn Creek in Carroll County, Illinois. It was built in 2000, so it is 25 years old, younger 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 50 vehicles a day, roughly 46% of them trucks, projected to reach 51 by 2046. The structure is 105 ft (31.9 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesDuck Road
CrossesElkhorn Creek
Location1 MI NE Milledgevill
RouteCounty Highway 0
CountyCarroll County
StateIllinois
Coordinates41.9747, -89.74407
Functional classRural 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length105 ft (31.9 m)
Longest span34 ft (10.4 m)
Deck width26 ft (8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic51 by 2046
Trucks46%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Duck Road over Elkhorn Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is Duck Road over Elkhorn 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 August 2024.

How much traffic does Duck Road over Elkhorn Creek carry?

About 50 vehicles per day (2021 count), of which roughly 46% are trucks.

How long is Duck Road over Elkhorn Creek?

The structure is 105 ft (31.9 m) long with a longest span of 34 ft (10.4 m) and a deck 26 ft wide.

Who owns Duck Road over Elkhorn Creek?

It is owned by the Town or Township Highway Agency.