US Bridges

Nfa B575 over Black Bayou

Good

Shelby County, Tennessee · Spottswood Ave - Memphis · Structure no. 79028090001

Built
1978
47 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
3,660
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa B575 over Black Bayou is a concrete culvert carrying Nfa B575 over Black Bayou in Shelby County, Tennessee. It was built in 1978, so it is 47 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,660 vehicles a day, roughly 2% of them trucks, projected to reach 5,856 by 2041. The structure is 33 ft (10.1 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa B575
CrossesBlack Bayou
LocationSpottswood Ave - Memphis
RouteCity Street 575
CountyShelby County
StateTennessee
Coordinates35.11323, -89.93322
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span15 ft (4.6 m)
Deck width44 ft (13.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,660 (2020)
Projected traffic5,856 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$119,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B575 over Black Bayou built?

It was built in 1978, making it 47 years old in 2025.

What condition is Nfa B575 over Black Bayou in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does Nfa B575 over Black Bayou carry?

About 3,660 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa B575 over Black Bayou?

The structure is 33 ft (10.1 m) long with a longest span of 15 ft (4.6 m) and a deck 44 ft wide.

Who owns Nfa B575 over Black Bayou?

It is owned by the City or Municipal Highway Agency.