US Bridges

S. Central Avenue over S. Br. of Kent Creek

Good

Winnebago County, Illinois · 0.06 MI S of Preston · Structure no. 101612400000000

Built
1975
50 years old, rebuilt 2011
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
74 ft
3 main spans
Daily traffic
3,400
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

S. Central Avenue over S. Br. of Kent Creek is a concrete slab carrying S. Central Avenue over S. Br. of Kent Creek in Winnebago County, Illinois. It was built in 1975 and reconstructed in 2011, so it is 50 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 3,400 vehicles a day, roughly 6% of them trucks, projected to reach 3,838 by 2046. The structure is 74 ft (22.6 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesS. Central Avenue
CrossesS. Br. of Kent Creek
Location0.06 MI S of Preston
CountyWinnebago County
StateIllinois
Coordinates42.27111, -89.11607
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating93.9 US tons
Inventory rating56.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length74 ft (22.6 m)
Longest span28 ft (8.5 m)
Deck width39 ft (11.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2022)
Projected traffic3,838 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 S. Central Avenue over S. Br. of Kent Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2011.

What condition is S. Central Avenue over S. Br. of Kent 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 October 2023.

How much traffic does S. Central Avenue over S. Br. of Kent Creek carry?

About 3,400 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is S. Central Avenue over S. Br. of Kent Creek?

The structure is 74 ft (22.6 m) long with a longest span of 28 ft (8.5 m) and a deck 39 ft wide.

Who owns S. Central Avenue over S. Br. of Kent Creek?

It is owned by the City or Municipal Highway Agency.