US Bridges

Nfa 4553 (sa 7124) over W Blackburn Fork Creek

Fair

Putnam County, Tennessee · 3MI from Jackson CO Line · Structure no. 71022340001

Built
2004
21 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
52 ft
3 main spans
Daily traffic
1,254
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 4553 (sa 7124) over W Blackburn Fork Creek is a concrete continuous culvert carrying Nfa 4553 (sa 7124) over W Blackburn Fork Creek in Putnam County, Tennessee. It was built in 2004, so it is 21 years old, younger than the Tennessee average of 47.4 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 1,254 vehicles a day, roughly 1% of them trucks, projected to reach 2,006 by 2042. The structure is 52 ft (15.9 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa 4553 (sa 7124)
CrossesW Blackburn Fork Creek
Location3MI from Jackson CO Line
RouteCounty Highway 4553
Coordinates36.20393, -85.58135
Functional classUrban 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length52 ft (15.9 m)
Longest span12 ft (3.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,254 (2021)
Projected traffic2,006 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Nfa 4553 (sa 7124) over W Blackburn Fork Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Nfa 4553 (sa 7124) over W Blackburn Fork Creek 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 August 2024.

How much traffic does Nfa 4553 (sa 7124) over W Blackburn Fork Creek carry?

About 1,254 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Nfa 4553 (sa 7124) over W Blackburn Fork Creek?

The structure is 52 ft (15.9 m) long with a longest span of 12 ft (3.6 m).

Who owns Nfa 4553 (sa 7124) over W Blackburn Fork Creek?

It is owned by the County Highway Agency.