US Bridges

Oak Knolls Rd. over Flint Creek

Fair

Lake County, Illinois · 0.5M.N.LAKE Cook Rd. · Structure no. 049305700000000

Built
1988
37 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
—
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Oak Knolls Rd. over Flint Creek is a concrete culvert carrying Oak Knolls Rd. over Flint Creek in Lake County, Illinois. It was built in 1988, so it is 37 years old, younger 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.

No traffic count is recorded. The structure is 24 ft (7.4 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesOak Knolls Rd.
CrossesFlint Creek
Location0.5M.N.LAKE Cook Rd.
RouteCounty Highway 0
CountyLake County
StateIllinois
Coordinates42.1635, -88.17047
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.4 m)
Longest span11 ft (3.4 m)
Deck width37 ft (11.3 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic429 by 2046
Trucks0%
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

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 Oak Knolls Rd. over Flint Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Oak Knolls Rd. over Flint 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 November 2024.

How much traffic does Oak Knolls Rd. over Flint Creek carry?

No traffic count is recorded for this structure.

How long is Oak Knolls Rd. over Flint Creek?

The structure is 24 ft (7.4 m) long with a longest span of 11 ft (3.4 m) and a deck 37 ft wide.

Who owns Oak Knolls Rd. over Flint Creek?

It is owned by the Town or Township Highway Agency.