US Bridges

Ky 1817 over Darby Fork

Fair

Oldham County, Kentucky · 1.8 MI E of Ky 329 · Structure no. 093B00054N

Built
1997
28 years old
Condition
Fair
inspected March 2021
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
346
2023 count
Owner
State
State Highway Agency

About this bridge

Ky 1817 over Darby Fork is a prestressed concrete box beam or girders - single or spread carrying Ky 1817 over Darby Fork in Oldham County, Kentucky. It was built in 1997, so it is 28 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 346 vehicles a day, projected to reach 346 by 2043. The structure is 45 ft (13.6 m) long and 31 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesKy 1817
CrossesDarby Fork
Location1.8 MI E of Ky 329
RouteState Highway 1817
CountyOldham County
StateKentucky
Coordinates38.38333, -85.49056
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.6 US tons
Inventory rating58 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length45 ft (13.6 m)
Longest span41 ft (12.5 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic346 (2023)
Projected traffic346 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 km)
TollOn a free road
National Highway SystemNo

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 1817 over Darby Fork built?

It was built in 1997, making it 28 years old in 2025.

What condition is Ky 1817 over Darby Fork 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 March 2021.

How much traffic does Ky 1817 over Darby Fork carry?

About 346 vehicles per day (2023 count).

How long is Ky 1817 over Darby Fork?

The structure is 45 ft (13.6 m) long with a longest span of 41 ft (12.5 m) and a deck 31 ft wide.

Who owns Ky 1817 over Darby Fork?

It is owned by the State Highway Agency.