US Bridges

Blackthorn Drive over South Navy Ditch

Good

Cook County, Illinois · 0.5 MI N E Lake Ave · Structure no. 016705400000000

Built
2019
6 years old
Condition
Good
inspected March 2022
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
1,000
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Blackthorn Drive over South Navy Ditch is a concrete culvert carrying Blackthorn Drive over South Navy Ditch in Cook County, Illinois. It was built in 2019, so it is 6 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 1,000 vehicles a day, projected to reach 1,010 by 2046. The structure is 24 ft (7.2 m) long.

Location

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CarriesBlackthorn Drive
CrossesSouth Navy Ditch
Location0.5 MI N E Lake Ave
RouteCity Street 0
CountyCook County
StateIllinois
Coordinates42.08566, -87.80616
Functional classUrban Local

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating61.1 US tons
Inventory rating47.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length24 ft (7.2 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2021)
Projected traffic1,010 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Blackthorn Drive over South Navy Ditch built?

It was built in 2019, making it 6 years old in 2025.

What condition is Blackthorn Drive over South Navy Ditch 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 March 2022.

How much traffic does Blackthorn Drive over South Navy Ditch carry?

About 1,000 vehicles per day (2021 count).

How long is Blackthorn Drive over South Navy Ditch?

The structure is 24 ft (7.2 m) long with a longest span of 10 ft (3 m).

Who owns Blackthorn Drive over South Navy Ditch?

It is owned by the City or Municipal Highway Agency.