US Bridges

Nfa D520 over Branch

Fair

Shelby County, Tennessee · Old Coleman RD - Shelby · Structure no. 790A2680001

Built
1970
55 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
60
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa D520 over Branch is a concrete continuous culvert carrying Nfa D520 over Branch in Shelby County, Tennessee. It was built in 1970, so it is 55 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 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 60 vehicles a day, roughly 2% of them trucks, projected to reach 96 by 2041. The structure is 26 ft (7.9 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNfa D520
CrossesBranch
LocationOld Coleman RD - Shelby
RouteCounty Highway 520
CountyShelby County
StateTennessee
Coordinates35.24703, -89.91514
Functional classUrban Local

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span10 ft (3 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2020)
Projected traffic96 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 D520 over Branch built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nfa D520 over 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 May 2023.

How much traffic does Nfa D520 over Branch carry?

About 60 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa D520 over Branch?

The structure is 26 ft (7.9 m) long with a longest span of 10 ft (3 m) and a deck 29 ft wide.

Who owns Nfa D520 over Branch?

It is owned by the County Highway Agency.