US Bridges

Ch 34/HAMILTON RD over Coon Creek

Good

Lee County, Illinois · 4 MI W of Harmon · Structure no. 052356100000000

Built
2015
10 years old
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
375
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 34/HAMILTON RD over Coon Creek is a prestressed concrete box beam or girders - multiple carrying Ch 34/HAMILTON RD over Coon Creek in Lee 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 375 vehicles a day, roughly 5% of them trucks, projected to reach 505 by 2046. The structure is 44 ft (13.5 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCh 34/HAMILTON RD
CrossesCoon Creek
Location4 MI W of Harmon
RouteCounty Highway 0
Coordinates41.72181, -89.63195
Functional classRural Minor Collector

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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length44 ft (13.5 m)
Longest span41 ft (12.5 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2022)
Projected traffic505 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Ch 34/HAMILTON RD over Coon Creek built?

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

What condition is Ch 34/HAMILTON RD over Coon 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 February 2025.

How much traffic does Ch 34/HAMILTON RD over Coon Creek carry?

About 375 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Ch 34/HAMILTON RD over Coon Creek?

The structure is 44 ft (13.5 m) long with a longest span of 41 ft (12.5 m) and a deck 28 ft wide.

Who owns Ch 34/HAMILTON RD over Coon Creek?

It is owned by the County Highway Agency.