US Bridges

Densmore Road over Blackberry Creek

FairPosted for load

Kane County, Illinois · 2.5 MI E Sugar Grove · Structure no. 045306200000000

Built
1961
64 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
96 ft
3 main spans
Daily traffic
1,000
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Densmore Road over Blackberry Creek is a concrete continuous slab carrying Densmore Road over Blackberry Creek in Kane County, Illinois. It was built in 1961, so it is 64 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,251 by 2046. The structure is 96 ft (29.2 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDensmore Road
CrossesBlackberry Creek
Location2.5 MI E Sugar Grove
RouteCounty Highway 0
CountyKane County
StateIllinois
Coordinates41.76981, -88.40171
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating15 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length96 ft (29.2 m)
Longest span38 ft (11.5 m)
Deck width29 ft (8.8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,251 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Densmore Road over Blackberry Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is Densmore Road over Blackberry Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does Densmore Road over Blackberry Creek carry?

About 1,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Densmore Road over Blackberry Creek?

The structure is 96 ft (29.2 m) long with a longest span of 38 ft (11.5 m) and a deck 29 ft wide.

Who owns Densmore Road over Blackberry Creek?

It is owned by the Town or Township Highway Agency.