US Bridges

KY-1645 over CSX Railroad

Fair

Estill County, Kentucky · .05 MI Sw-Rvr Dr-Irvine · Structure no. 033B00036N

Built
1983
42 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
81 ft
1 main span
Daily traffic
752
2021 count
Owner
State
State Highway Agency

About this bridge

KY-1645 over CSX Railroad is a prestressed concrete box beam or girders - multiple carrying KY-1645 over CSX Railroad in Estill County, Kentucky. It was built in 1983, so it is 42 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 752 vehicles a day, projected to reach 752 by 2041. The structure is 81 ft (24.7 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKY-1645
CrossesCSX Railroad
Location.05 MI Sw-Rvr Dr-Irvine
RouteState Highway 1645
CountyEstill County
StateKentucky
Coordinates37.6975, -83.97222
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating29.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span74 ft (22.7 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic752 (2021)
Projected traffic752 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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-1645 over CSX Railroad built?

It was built in 1983, making it 42 years old in 2025.

What condition is KY-1645 over CSX Railroad 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 May 2024.

How much traffic does KY-1645 over CSX Railroad carry?

About 752 vehicles per day (2021 count).

How long is KY-1645 over CSX Railroad?

The structure is 81 ft (24.7 m) long with a longest span of 74 ft (22.7 m) and a deck 31 ft wide.

Who owns KY-1645 over CSX Railroad?

It is owned by the State Highway Agency.