US Bridges

Il 107 over Mckee Creek

Good

Brown County, Illinois · 7.2M S IL99-MT Strlg · Structure no. 005000200000000

Built
1950
75 years old, rebuilt 1998
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
565 ft
8 main spans
Daily traffic
1,400
2023 count
Owner
State
State Highway Agency

About this bridge

Il 107 over Mckee Creek is a steel continuous stringer/multi-beam or girder carrying Il 107 over Mckee Creek in Brown County, Illinois. It was built in 1950 and reconstructed in 1998, so it is 75 years old, older 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 1,400 vehicles a day, roughly 16% of them trucks, projected to reach 1,414 by 2046. The structure is 565 ft (172.2 m) long and 35 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesIl 107
CrossesMckee Creek
Location7.2M S IL99-MT Strlg
RouteState Highway 107
Coordinates39.88149, -90.75741
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating69.3 US tons
Inventory rating41.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length565 ft (172.2 m)
Longest span101 ft (30.8 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2023)
Projected traffic1,414 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 107 over Mckee Creek built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1998.

What condition is Il 107 over Mckee 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 April 2023.

How much traffic does Il 107 over Mckee Creek carry?

About 1,400 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Il 107 over Mckee Creek?

The structure is 565 ft (172.2 m) long with a longest span of 101 ft (30.8 m) and a deck 35 ft wide.

Who owns Il 107 over Mckee Creek?

It is owned by the State Highway Agency.