US Bridges

Laporte Av over Natalie CR

Good

Cook County, Illinois · 0.1 M S 151st · Structure no. 016764100000000

Built
1967
58 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
125
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Laporte Av over Natalie CR is a concrete culvert carrying Laporte Av over Natalie CR in Cook County, Illinois. It was built in 1967, so it is 58 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 125 vehicles a day, roughly 18% of them trucks, projected to reach 227 by 2046. The structure is 28 ft (8.5 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLaporte Av
CrossesNatalie CR
Location0.1 M S 151st
RouteCity Street 0
CountyCook County
StateIllinois
Coordinates41.61638, -87.7402
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.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating33.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span14 ft (4.3 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2022)
Projected traffic227 by 2046
Trucks18%
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

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 Laporte Av over Natalie CR built?

It was built in 1967, making it 58 years old in 2025.

What condition is Laporte Av over Natalie CR 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 June 2023.

How much traffic does Laporte Av over Natalie CR carry?

About 125 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Laporte Av over Natalie CR?

The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m) and a deck 40 ft wide.

Who owns Laporte Av over Natalie CR?

It is owned by the City or Municipal Highway Agency.