US Bridges

I-75 over Chambers Lane

Fair

Boone County, Kentucky · .7 MI Nor of I-75 Op · Structure no. 008B00041N

Built
1960
65 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
34 ft
1 main span
Daily traffic
112,428
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 over Chambers Lane is a concrete culvert carrying I-75 over Chambers Lane in Boone County, Kentucky. It was built in 1960, so it is 65 years old, older than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 112,428 vehicles a day, roughly 24% of them trucks, projected to reach 123,670 by 2043. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-75
CrossesChambers Lane
Location.7 MI Nor of I-75 Op
RouteInterstate 75
CountyBoone County
StateKentucky
Coordinates38.88972, -84.62639
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110 US tons
Inventory rating110 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span30 ft (9.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112,428 (2023)
Projected traffic123,670 by 2043
Trucks24%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$85,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 over Chambers Lane built?

It was built in 1960, making it 65 years old in 2025.

What condition is I-75 over Chambers Lane 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 June 2023.

How much traffic does I-75 over Chambers Lane carry?

About 112,428 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is I-75 over Chambers Lane?

The structure is 34 ft (10.4 m) long with a longest span of 30 ft (9.1 m).

Who owns I-75 over Chambers Lane?

It is owned by the State Highway Agency.