US Bridges

Nfa 813 (sa 7920) over Royster Creek

Fair

Shelby County, Tennessee · Shelby RD - Millington · Structure no. 79002090001

Built
1950
75 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
146 ft
3 main spans
Daily traffic
7,134
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa 813 (sa 7920) over Royster Creek is a prestressed concrete box beam or girders - multiple carrying Nfa 813 (sa 7920) over Royster Creek in Shelby County, Tennessee. It was built in 1950, so it is 75 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 7,134 vehicles a day, roughly 4% of them trucks, projected to reach 11,142 by 2041. The structure is 146 ft (44.6 m) long and 85 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 813 (sa 7920)
CrossesRoyster Creek
LocationShelby RD - Millington
RouteCity Street 813
CountyShelby County
StateTennessee
Coordinates35.34614, -89.91186
Functional classUrban Minor Arterial

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.
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length146 ft (44.6 m)
Longest span49 ft (15 m)
Deck width85 ft (25.8 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,134 (2021)
Projected traffic11,142 by 2041
Trucks4%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 813 (sa 7920) over Royster Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Nfa 813 (sa 7920) over Royster 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 813 (sa 7920) over Royster Creek carry?

About 7,134 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Nfa 813 (sa 7920) over Royster Creek?

The structure is 146 ft (44.6 m) long with a longest span of 49 ft (15 m) and a deck 85 ft wide.

Who owns Nfa 813 (sa 7920) over Royster Creek?

It is owned by the City or Municipal Highway Agency.