US Bridges

CO HWY 31 over Middle Creek

Poor

Hancock County, Illinois · 2.0 MI NE Middle CR · Structure no. 034331200000000

Built
1970
55 years old
Condition
Poor
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
100
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

CO HWY 31 over Middle Creek is a prestressed concrete box beam or girders - multiple carrying CO HWY 31 over Middle Creek in Hancock County, Illinois. It was built in 1970, so it is 55 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 100 vehicles a day, projected to reach 101 by 2046. The structure is 46 ft (14.1 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCO HWY 31
CrossesMiddle Creek
Location2.0 MI NE Middle CR
RouteCounty Highway 0
Coordinates40.39498, -90.98474
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating24.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length46 ft (14.1 m)
Longest span45 ft (13.8 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic101 by 2046
Trucks0%
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 CO HWY 31 over Middle Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is CO HWY 31 over Middle Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does CO HWY 31 over Middle Creek carry?

About 100 vehicles per day (2023 count).

How long is CO HWY 31 over Middle Creek?

The structure is 46 ft (14.1 m) long with a longest span of 45 ft (13.8 m) and a deck 26 ft wide.

Who owns CO HWY 31 over Middle Creek?

It is owned by the Town or Township Highway Agency.