US Bridges

Ky 3521 over Hinton Branch

Fair

Allen County, Kentucky · 1.2 MI N. of Ky/Tenn Line · Structure no. 002B00052N

Built
1950
75 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
737
2021 count
Owner
State
State Highway Agency

About this bridge

Ky 3521 over Hinton Branch is a concrete culvert carrying Ky 3521 over Hinton Branch in Allen County, Kentucky. It was built in 1950, so it is 75 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 737 vehicles a day, projected to reach 737 by 2041. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesKy 3521
CrossesHinton Branch
Location1.2 MI N. of Ky/Tenn Line
RouteState Highway 3521
CountyAllen County
StateKentucky
Coordinates36.66028, -86.25833
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic737 (2021)
Projected traffic737 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 3521 over Hinton Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Ky 3521 over Hinton Branch 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 April 2024.

How much traffic does Ky 3521 over Hinton Branch carry?

About 737 vehicles per day (2021 count).

How long is Ky 3521 over Hinton Branch?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m).

Who owns Ky 3521 over Hinton Branch?

It is owned by the State Highway Agency.