US Bridges

US 45/52 over N. Branch of Rock CR

Good

Kankakee County, Illinois · 1.5M N of Manteno Rd/Ch 9 · Structure no. 046016000000000

Built
2023
2 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
110 ft
3 main spans
Daily traffic
5,900
2023 count
Owner
State
State Highway Agency

About this bridge

US 45/52 over N. Branch of Rock CR is a steel stringer/multi-beam or girder carrying US 45/52 over N. Branch of Rock CR in Kankakee County, Illinois. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,900 vehicles a day, roughly 14% of them trucks, projected to reach 7,395 by 2046. The structure is 110 ft (33.5 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS 45/52
CrossesN. Branch of Rock CR
Location1.5M N of Manteno Rd/Ch 9
RouteU.S. Route 45
CountyKankakee County
StateIllinois
Coordinates41.2718, -87.87808
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.9 US tons
Inventory rating90.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length110 ft (33.5 m)
Longest span106 ft (32.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck100 ft (30.4 m)

Traffic and service

Average daily traffic5,900 (2023)
Projected traffic7,395 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 45/52 over N. Branch of Rock CR built?

It was built in 2023, making it 2 years old in 2025.

What condition is US 45/52 over N. Branch of Rock CR 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 December 2024.

How much traffic does US 45/52 over N. Branch of Rock CR carry?

About 5,900 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is US 45/52 over N. Branch of Rock CR?

The structure is 110 ft (33.5 m) long with a longest span of 106 ft (32.3 m) and a deck 43 ft wide.

Who owns US 45/52 over N. Branch of Rock CR?

It is owned by the State Highway Agency.