US Bridges

Il 61 over Flour Creek

Fair

Hancock County, Illinois · 3.6M N IL101-AUGUSTA · Structure no. 034050200000000

Built
2001
24 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
1,100
2023 count
Owner
State
State Highway Agency

About this bridge

Il 61 over Flour Creek is a prestressed concrete stringer/multi-beam or girder carrying Il 61 over Flour Creek in Hancock County, Illinois. It was built in 2001, so it is 24 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 1,100 vehicles a day, roughly 13% of them trucks, projected to reach 1,212 by 2046. The structure is 52 ft (16 m) long and 35 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesIl 61
CrossesFlour Creek
Location3.6M N IL101-AUGUSTA
RouteState Highway 61
Coordinates40.27621, -90.92022
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating43.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length52 ft (16 m)
Longest span50 ft (15.1 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic1,212 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Il 61 over Flour Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is Il 61 over Flour 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 February 2024.

How much traffic does Il 61 over Flour Creek carry?

About 1,100 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Il 61 over Flour Creek?

The structure is 52 ft (16 m) long with a longest span of 50 ft (15.1 m) and a deck 35 ft wide.

Who owns Il 61 over Flour Creek?

It is owned by the State Highway Agency.