US Bridges

Denker Road over Ferson Creek

Good

Kane County, Illinois · 0.65 MI N Bolcum RD · Structure no. 045500300000000

Built
1972
53 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Denker Road over Ferson Creek is a concrete continuous culvert carrying Denker Road over Ferson Creek in Kane County, Illinois. It was built in 1972, so it is 53 years old, older 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 1,000 vehicles a day, roughly 9% of them trucks, projected to reach 915 by 2046. The structure is 22 ft (6.6 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesDenker Road
CrossesFerson Creek
Location0.65 MI N Bolcum RD
RouteCity Street 0
Coordinates41.95659, -88.38874
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.8 US tons
Inventory rating52.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckOther
Main spans2
Design loadHS 20
Structure length22 ft (6.6 m)
Longest span10 ft (3.2 m)
Deck width42 ft (12.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic915 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Denker Road over Ferson Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Denker Road over Ferson 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 September 2024.

How much traffic does Denker Road over Ferson Creek carry?

About 1,000 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Denker Road over Ferson Creek?

The structure is 22 ft (6.6 m) long with a longest span of 10 ft (3.2 m) and a deck 42 ft wide.

Who owns Denker Road over Ferson Creek?

It is owned by the City or Municipal Highway Agency.