US Bridges

Nfa D996 over Marys Creek

Fair

Shelby County, Tennessee · Reed Hooker RD - Shelby · Structure no. 790A6830001

Built
1970
55 years old
Condition
Fair
inspected May 2023
Type
Channel Beam
Concrete
Length
85 ft
5 main spans
Daily traffic
240
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa D996 over Marys Creek is a concrete channel beam carrying Nfa D996 over Marys Creek 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 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 240 vehicles a day, roughly 2% of them trucks, projected to reach 384 by 2041. The structure is 85 ft (25.9 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesNfa D996
CrossesMarys Creek
LocationReed Hooker RD - Shelby
RouteCounty Highway 996
CountyShelby County
StateTennessee
Coordinates35.13506, -89.67731
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating26.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadH 10
Structure length85 ft (25.9 m)
Longest span17 ft (5.2 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2020)
Projected traffic384 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$572,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa D996 over Marys Creek built?

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

What condition is Nfa D996 over Marys 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 May 2023.

How much traffic does Nfa D996 over Marys Creek carry?

About 240 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa D996 over Marys Creek?

The structure is 85 ft (25.9 m) long with a longest span of 17 ft (5.2 m) and a deck 32 ft wide.

Who owns Nfa D996 over Marys Creek?

It is owned by the County Highway Agency.