US Bridges

Il 71 over Intermittent Stream

Good

Putnam County, Illinois · 3.18 MI W of Il 89 · Structure no. 078200800000000

Built
2007
18 years old
Condition
Good
inspected May 2021
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
4,100
2023 count
Owner
State
State Highway Agency

About this bridge

Il 71 over Intermittent Stream is a concrete continuous culvert carrying Il 71 over Intermittent Stream in Putnam 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,100 vehicles a day, roughly 21% of them trucks, projected to reach 4,420 by 2046. The structure is 28 ft (8.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIl 71
CrossesIntermittent Stream
Location3.18 MI W of Il 89
RouteState Highway 71
CountyPutnam County
StateIllinois
Coordinates41.25722, -89.263
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
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 rating65.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.6 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,100 (2023)
Projected traffic4,420 by 2046
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 71 over Intermittent Stream built?

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

What condition is Il 71 over Intermittent Stream 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 May 2021.

How much traffic does Il 71 over Intermittent Stream carry?

About 4,100 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is Il 71 over Intermittent Stream?

The structure is 28 ft (8.6 m) long with a longest span of 11 ft (3.3 m).

Who owns Il 71 over Intermittent Stream?

It is owned by the State Highway Agency.