US Bridges

I-71 over Mill CR + Mill CR RD

Fair

Carroll County, Kentucky · Nbl .7 MI N of Trimble CO · Structure no. 021B00039L

Built
1967
58 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete
Length
336 ft
6 main spans
Daily traffic
14,909
2021 count
Owner
State
State Highway Agency

About this bridge

I-71 over Mill CR + Mill CR RD is a concrete tee beam carrying I-71 over Mill CR + Mill CR RD in Carroll County, Kentucky. It was built in 1967, so it is 58 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 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 14,909 vehicles a day, roughly 35% of them trucks, projected to reach 18,487 by 2041. The structure is 336 ft (102.4 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-71
CrossesMill CR + Mill CR RD
LocationNbl .7 MI N of Trimble CO
RouteInterstate 71
CountyCarroll County
StateKentucky
Coordinates38.59417, -85.17472
Functional classRural 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
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 inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99.4 US tons
Inventory rating59.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length336 ft (102.4 m)
Longest span53 ft (16.3 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,909 (2021)
Projected traffic18,487 by 2041
Trucks35%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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$1.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-71 over Mill CR + Mill CR RD built?

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

What condition is I-71 over Mill CR + Mill CR RD 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 November 2024.

How much traffic does I-71 over Mill CR + Mill CR RD carry?

About 14,909 vehicles per day (2021 count), of which roughly 35% are trucks.

How long is I-71 over Mill CR + Mill CR RD?

The structure is 336 ft (102.4 m) long with a longest span of 53 ft (16.3 m) and a deck 36 ft wide.

Who owns I-71 over Mill CR + Mill CR RD?

It is owned by the State Highway Agency.