US Bridges

Seavey Road over Blackberry Creek

Fair

Kane County, Illinois · 0.4 MI W Ill 47 · Structure no. 045305700000000

Built
1961
64 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
47 ft
2 main spans
Daily traffic
100
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Seavey Road over Blackberry Creek is a concrete continuous slab carrying Seavey 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.

It carries about 100 vehicles a day, roughly 16% of them trucks, projected to reach 183 by 2046. The structure is 47 ft (14.3 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSeavey Road
CrossesBlackberry Creek
Location0.4 MI W Ill 47
RouteCounty Highway 0
CountyKane County
StateIllinois
Coordinates41.8234, -88.47504
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating52.5 US tons
Inventory rating31.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length47 ft (14.3 m)
Longest span24 ft (7.2 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic183 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Seavey Road over Blackberry Creek built?

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

What condition is Seavey 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 May 2023.

How much traffic does Seavey Road over Blackberry Creek carry?

About 100 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Seavey Road over Blackberry Creek?

The structure is 47 ft (14.3 m) long with a longest span of 24 ft (7.2 m) and a deck 26 ft wide.

Who owns Seavey Road over Blackberry Creek?

It is owned by the Town or Township Highway Agency.