US Bridges

Peoria Avenue over Rock River

Good

Lee County, Illinois · Dixon · Structure no. 052610300000000

Built
2005
20 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
669 ft
5 main spans
Daily traffic
8,750
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Peoria Avenue over Rock River is a steel continuous stringer/multi-beam or girder carrying Peoria Avenue over Rock River in Lee County, Illinois. It was built in 2005, so it is 20 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 8,750 vehicles a day, roughly 4% of them trucks, projected to reach 10,201 by 2046. The structure is 669 ft (203.8 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesPeoria Avenue
CrossesRock River
LocationDixon
Coordinates41.84571, -89.48648
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length669 ft (203.8 m)
Longest span138 ft (42.1 m)
Deck width71 ft (21.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,750 (2022)
Projected traffic10,201 by 2046
Trucks4%
Lanes on structure4
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 Peoria Avenue over Rock River built?

It was built in 2005, making it 20 years old in 2025.

What condition is Peoria Avenue over Rock River 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 2024.

How much traffic does Peoria Avenue over Rock River carry?

About 8,750 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Peoria Avenue over Rock River?

The structure is 669 ft (203.8 m) long with a longest span of 138 ft (42.1 m) and a deck 71 ft wide.

Who owns Peoria Avenue over Rock River?

It is owned by the City or Municipal Highway Agency.