US Bridges

KY-1684 over Unname Stream

Fair

Graves County, Kentucky · 1.4 MI Nor. of JCT Ky 849 · Structure no. 042B00114N

Built
1957
68 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
660
2021 count
Owner
State
State Highway Agency

About this bridge

KY-1684 over Unname Stream is a concrete culvert carrying KY-1684 over Unname Stream in Graves County, Kentucky. It was built in 1957, so it is 68 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 660 vehicles a day, projected to reach 660 by 2041. The structure is 24 ft (7.4 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesKY-1684
CrossesUnname Stream
Location1.4 MI Nor. of JCT Ky 849
RouteState Highway 1684
CountyGraves County
StateKentucky
Coordinates36.90389, -88.58056
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length24 ft (7.4 m)
Longest span12 ft (3.6 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic660 (2021)
Projected traffic660 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-1684 over Unname Stream built?

It was built in 1957, making it 68 years old in 2025.

What condition is KY-1684 over Unname Stream 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 September 2024.

How much traffic does KY-1684 over Unname Stream carry?

About 660 vehicles per day (2021 count).

How long is KY-1684 over Unname Stream?

The structure is 24 ft (7.4 m) long with a longest span of 12 ft (3.6 m) and a deck 27 ft wide.

Who owns KY-1684 over Unname Stream?

It is owned by the State Highway Agency.