US Bridges

Nfa K634 over Cypress Creek

Fair

Shelby County, Tennessee · Old Airline RD - Shelby · Structure no. 790A6570001

Built
1955
70 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
127 ft
3 main spans
Daily traffic
360
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa K634 over Cypress Creek is a steel stringer/multi-beam or girder carrying Nfa K634 over Cypress Creek in Shelby County, Tennessee. It was built in 1955, so it is 70 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 360 vehicles a day, roughly 3% of them trucks, projected to reach 576 by 2042. The structure is 127 ft (38.7 m) long and 32 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesNfa K634
CrossesCypress Creek
LocationOld Airline RD - Shelby
RouteCity Street 634
CountyShelby County
StateTennessee
Coordinates35.24367, -89.67728
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 10
Structure length127 ft (38.7 m)
Longest span31 ft (9.4 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2020)
Projected traffic576 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$842,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa K634 over Cypress Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Nfa K634 over Cypress 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 April 2023.

How much traffic does Nfa K634 over Cypress Creek carry?

About 360 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Nfa K634 over Cypress Creek?

The structure is 127 ft (38.7 m) long with a longest span of 31 ft (9.4 m) and a deck 32 ft wide.

Who owns Nfa K634 over Cypress Creek?

It is owned by the City or Municipal Highway Agency.