US Bridges

Ky 1747 NB over Blue Spring Ditch

Fair

Jefferson County, Kentucky · 0.65 MI N of Ky 61 · Structure no. 056B00452R

Built
1996
29 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
13,741
2023 count
Owner
State
State Highway Agency

About this bridge

Ky 1747 NB over Blue Spring Ditch is a prestressed concrete box beam or girders - multiple carrying Ky 1747 NB over Blue Spring Ditch in Jefferson County, Kentucky. It was built in 1996, so it is 29 years old, younger 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 13,741 vehicles a day, roughly 9% of them trucks, projected to reach 13,741 by 2043. The structure is 50 ft (15.2 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKy 1747 NB
CrossesBlue Spring Ditch
Location0.65 MI N of Ky 61
RouteState Highway 1747
CountyJefferson County
StateKentucky
Coordinates38.15778, -85.685
Functional classUrban Other Principal Arterial

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.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.4 US tons
Inventory rating35.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length50 ft (15.2 m)
Longest span49 ft (14.8 m)
Deck width52 ft (15.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,741 (2023)
Projected traffic13,741 by 2043
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ky 1747 NB over Blue Spring Ditch built?

It was built in 1996, making it 29 years old in 2025.

What condition is Ky 1747 NB over Blue Spring Ditch 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 February 2024.

How much traffic does Ky 1747 NB over Blue Spring Ditch carry?

About 13,741 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Ky 1747 NB over Blue Spring Ditch?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.8 m) and a deck 52 ft wide.

Who owns Ky 1747 NB over Blue Spring Ditch?

It is owned by the State Highway Agency.