US Bridges

Nfa A823 over Branch - Maint. by State

Good

Knox County, Tennessee · Myrtlewood Drive · Structure no. 470A8230001

Built
1981
44 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
27 ft
3 main spans
Daily traffic
730
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A823 over Branch - Maint. by State is a concrete continuous culvert carrying Nfa A823 over Branch - Maint. by State in Knox County, Tennessee. It was built in 1981, so it is 44 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 730 vehicles a day, roughly 2% of them trucks, projected to reach 1,168 by 2041. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A823
CrossesBranch - Maint. by State
LocationMyrtlewood Drive
RouteCity Street 823
CountyKnox County
StateTennessee
Coordinates35.97882, -83.97858
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic730 (2020)
Projected traffic1,168 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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A823 over Branch - Maint. by State built?

It was built in 1981, making it 44 years old in 2025.

What condition is Nfa A823 over Branch - Maint. by State 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 November 2024.

How much traffic does Nfa A823 over Branch - Maint. by State carry?

About 730 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A823 over Branch - Maint. by State?

The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m).

Who owns Nfa A823 over Branch - Maint. by State?

It is owned by the State Highway Agency.