US Bridges

Main Street over Kinnikinnick Creek

Good

Winnebago County, Illinois · In Roscoe · Structure no. 101660100000000

Built
2000
25 years old
Condition
Good
inspected June 2021
Type
Slab
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
5,600
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main Street over Kinnikinnick Creek is a concrete continuous slab carrying Main Street over Kinnikinnick Creek in Winnebago County, Illinois. It was built in 2000, so it is 25 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 5,600 vehicles a day, roughly 3% of them trucks, projected to reach 6,414 by 2046. The structure is 120 ft (36.5 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMain Street
CrossesKinnikinnick Creek
LocationIn Roscoe
Coordinates42.41543, -89.00952
Functional classUrban Collector

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 protection8 Very GoodNo problems noted.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.9 US tons
Inventory rating47.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.5 m)
Longest span39 ft (12 m)
Deck width47 ft (14.4 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,600 (2022)
Projected traffic6,414 by 2046
Trucks3%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Main Street over Kinnikinnick Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is Main Street over Kinnikinnick 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 June 2021.

How much traffic does Main Street over Kinnikinnick Creek carry?

About 5,600 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Main Street over Kinnikinnick Creek?

The structure is 120 ft (36.5 m) long with a longest span of 39 ft (12 m) and a deck 47 ft wide.

Who owns Main Street over Kinnikinnick Creek?

It is owned by the City or Municipal Highway Agency.