US Bridges

Nfa 5577 (sa 2005) over Rocky Branch

Fair

Decatur County, Tennessee · 2.5 MI NW JCT SR20&SR69 · Structure no. 20S80640011

Built
1972
53 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
886
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 5577 (sa 2005) over Rocky Branch is a concrete continuous culvert carrying Nfa 5577 (sa 2005) over Rocky Branch in Decatur County, Tennessee. It was built in 1972, so it is 53 years old, older 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 5 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 886 vehicles a day, roughly 3% of them trucks, projected to reach 1,418 by 2042. The structure is 29 ft (8.8 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa 5577 (sa 2005)
CrossesRocky Branch
Location2.5 MI NW JCT SR20&SR69
RouteCounty Highway 5577
CountyDecatur County
StateTennessee
Coordinates35.68483, -88.13864
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length29 ft (8.8 m)
Longest span14 ft (4.2 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic886 (2021)
Projected traffic1,418 by 2042
Trucks3%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 5577 (sa 2005) over Rocky Branch built?

It was built in 1972, making it 53 years old in 2025.

What condition is Nfa 5577 (sa 2005) over Rocky 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 January 2024.

How much traffic does Nfa 5577 (sa 2005) over Rocky Branch carry?

About 886 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 5577 (sa 2005) over Rocky Branch?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.2 m) and a deck 32 ft wide.

Who owns Nfa 5577 (sa 2005) over Rocky Branch?

It is owned by the County Highway Agency.