US Bridges

Nfa K122 over Harrison Creek

Fair

Shelby County, Tennessee · Grey RD - Memphis · Structure no. 790B6330001

Built
1960
65 years old
Condition
Fair
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
121 ft
3 main spans
Daily traffic
1,690
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa K122 over Harrison Creek is a concrete continuous tee beam carrying Nfa K122 over Harrison Creek in Shelby County, Tennessee. It was built in 1960, so it is 65 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 1,690 vehicles a day, roughly 2% of them trucks, projected to reach 2,704 by 2041. The structure is 121 ft (36.9 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa K122
CrossesHarrison Creek
LocationGrey RD - Memphis
RouteCity Street 122
CountyShelby County
StateTennessee
Coordinates35.17269, -89.92683
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length121 ft (36.9 m)
Longest span53 ft (16.2 m)
Deck width50 ft (15.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,690 (2020)
Projected traffic2,704 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa K122 over Harrison Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa K122 over Harrison 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 January 2025.

How much traffic does Nfa K122 over Harrison Creek carry?

About 1,690 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa K122 over Harrison Creek?

The structure is 121 ft (36.9 m) long with a longest span of 53 ft (16.2 m) and a deck 50 ft wide.

Who owns Nfa K122 over Harrison Creek?

It is owned by the City or Municipal Highway Agency.