US Bridges

Ill 71 over Drainage Ditch

Good

Putnam County, Illinois · 1.14 MI W of Ill 89 · Structure no. 078200700000000

Built
2015
10 years old
Condition
Good
inspected November 2021
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
4,700
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 71 over Drainage Ditch is a concrete continuous culvert carrying Ill 71 over Drainage Ditch in Putnam County, Illinois. It was built in 2015, so it is 10 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 4,700 vehicles a day, roughly 21% of them trucks, projected to reach 5,304 by 2046. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesIll 71
CrossesDrainage Ditch
Location1.14 MI W of Ill 89
RouteState Highway 71
Coordinates41.25749, -89.22411
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating48.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.8 m)
Deck width0 ft (0 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,700 (2023)
Projected traffic5,304 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 Ill 71 over Drainage Ditch built?

It was built in 2015, making it 10 years old in 2025.

What condition is Ill 71 over Drainage Ditch 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 November 2021.

How much traffic does Ill 71 over Drainage Ditch carry?

About 4,700 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is Ill 71 over Drainage Ditch?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.8 m).

Who owns Ill 71 over Drainage Ditch?

It is owned by the State Highway Agency.