US Bridges

Il 22 over Flint Creek

Fair

Lake County, Illinois · 1.5 M W of Il 59 · Structure no. 049007900000000

Built
1926
99 years old, rebuilt 1975
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
52 ft
2 main spans
Daily traffic
11,000
2023 count
Owner
State
State Highway Agency

About this bridge

Il 22 over Flint Creek is a concrete continuous slab carrying Il 22 over Flint Creek in Lake County, Illinois. It was built in 1926 and reconstructed in 1975, so it is 99 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 5 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 11,000 vehicles a day, roughly 4% of them trucks, projected to reach 10,605 by 2046. The structure is 52 ft (15.8 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesIl 22
CrossesFlint Creek
Location1.5 M W of Il 59
RouteState Highway 22
CountyLake County
StateIllinois
Coordinates42.19165, -88.16676
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating61.4 US tons
Inventory rating36.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length52 ft (15.8 m)
Longest span24 ft (7.3 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2023)
Projected traffic10,605 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$336,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 22 over Flint Creek built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1975.

What condition is Il 22 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 February 2024.

How much traffic does Il 22 over Flint Creek carry?

About 11,000 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Il 22 over Flint Creek?

The structure is 52 ft (15.8 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.

Who owns Il 22 over Flint Creek?

It is owned by the State Highway Agency.