US Bridges

Ch 17 over Macoupin Creek

Fair

Greene County, Illinois · 4 MI NW Old Kane · Structure no. 031301600000000

Built
1961
64 years old, rebuilt 2007
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
150
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 17 over Macoupin Creek is a prestressed concrete box beam or girders - multiple carrying Ch 17 over Macoupin Creek in Greene County, Illinois. It was built in 1961 and reconstructed in 2007, so it is 64 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 150 vehicles a day, roughly 11% of them trucks, projected to reach 126 by 2046. The structure is 180 ft (54.9 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCh 17
CrossesMacoupin Creek
Location4 MI NW Old Kane
RouteCounty Highway 0
CountyGreene County
StateIllinois
Coordinates39.21108, -90.42821
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span59 ft (18 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic126 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$550,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ch 17 over Macoupin Creek built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2007.

What condition is Ch 17 over Macoupin 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 June 2023.

How much traffic does Ch 17 over Macoupin Creek carry?

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

How long is Ch 17 over Macoupin Creek?

The structure is 180 ft (54.9 m) long with a longest span of 59 ft (18 m) and a deck 27 ft wide.

Who owns Ch 17 over Macoupin Creek?

It is owned by the County Highway Agency.