US Bridges

10th Av over Keith Creek

FairPosted for load

Winnebago County, Illinois · 0.1 MI E Kishwaukee · Structure no. 101604200000000

Built
1910
115 years old
Condition
Fair
inspected July 2023
Type
Arch - Deck
Concrete
Length
48 ft
1 main span
Daily traffic
475
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

10th Av over Keith Creek is a concrete arch - deck carrying 10th Av over Keith Creek in Winnebago County, Illinois. It was built in 1910, so it is 115 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. Its operating status is: posted for load restriction.

It carries about 475 vehicles a day, roughly 4% of them trucks, projected to reach 556 by 2046. The structure is 48 ft (14.6 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries10th Av
CrossesKeith Creek
Location0.1 MI E Kishwaukee
RouteCity Street 0
CountyWinnebago County
StateIllinois
Coordinates42.25626, -89.08458
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
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 protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.5 US tons
Inventory rating27.4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span44 ft (13.4 m)
Deck width46 ft (13.9 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2022)
Projected traffic556 by 2046
Trucks4%
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 10th Av over Keith Creek built?

It was built in 1910, making it 115 years old in 2025.

What condition is 10th Av over Keith 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 July 2023.

How much traffic does 10th Av over Keith Creek carry?

About 475 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is 10th Av over Keith Creek?

The structure is 48 ft (14.6 m) long with a longest span of 44 ft (13.4 m) and a deck 46 ft wide.

Who owns 10th Av over Keith Creek?

It is owned by the City or Municipal Highway Agency.