US Bridges

Ill 117 over Walnut Creek

Good

Woodford County, Illinois · 1.95 MI S of Ill 116 · Structure no. 102202500000000

Built
1997
28 years old
Condition
Good
inspected February 2021
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
2,900
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 117 over Walnut Creek is a concrete continuous culvert carrying Ill 117 over Walnut Creek in Woodford County, Illinois. It was built in 1997, so it is 28 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 2,900 vehicles a day, roughly 6% of them trucks, projected to reach 2,475 by 2046. The structure is 21 ft (6.5 m) long and 62 ft wide.

CarriesIll 117
CrossesWalnut Creek
Location1.95 MI S of Ill 116
RouteState Highway 117
Coordinates40.76378, -89.27336
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 inspectionFebruary 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.6 US tons
Inventory rating59.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.5 m)
Longest span21 ft (6.5 m)
Deck width62 ft (18.8 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2023)
Projected traffic2,475 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 117 over Walnut Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Ill 117 over Walnut Creek 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 February 2021.

How much traffic does Ill 117 over Walnut Creek carry?

About 2,900 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Ill 117 over Walnut Creek?

The structure is 21 ft (6.5 m) long with a longest span of 21 ft (6.5 m) and a deck 62 ft wide.

Who owns Ill 117 over Walnut Creek?

It is owned by the State Highway Agency.