US Bridges

Railroad Avenue over Keith Creek

Good

Winnebago County, Illinois · 0.03 MI W 9th ST · Structure no. 101614800000000

Built
2015
10 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
66 ft
1 main span
Daily traffic
575
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Railroad Avenue over Keith Creek is a steel stringer/multi-beam or girder carrying Railroad Avenue over Keith Creek in Winnebago County, Illinois. It was built in 2015, so it is 10 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 575 vehicles a day, roughly 3% of them trucks, projected to reach 758 by 2046. The structure is 66 ft (20.2 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRailroad Avenue
CrossesKeith Creek
Location0.03 MI W 9th ST
RouteCity Street 0
CountyWinnebago County
StateIllinois
Coordinates42.25857, -89.07781
Functional classUrban Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length66 ft (20.2 m)
Longest span65 ft (19.8 m)
Deck width39 ft (11.9 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic575 (2022)
Projected traffic758 by 2046
Trucks3%
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 Railroad Avenue over Keith Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is Railroad Avenue over Keith 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 July 2023.

How much traffic does Railroad Avenue over Keith Creek carry?

About 575 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Railroad Avenue over Keith Creek?

The structure is 66 ft (20.2 m) long with a longest span of 65 ft (19.8 m) and a deck 39 ft wide.

Who owns Railroad Avenue over Keith Creek?

It is owned by the City or Municipal Highway Agency.