US Bridges

Nfa A789 over London Branch

Good

Bradley County, Tennessee · .1 MI South of US64 · Structure no. 060A2240001

Built
1983
42 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
110
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A789 over London Branch is a concrete continuous culvert carrying Nfa A789 over London Branch in Bradley County, Tennessee. It was built in 1983, so it is 42 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 110 vehicles a day, roughly 2% of them trucks, projected to reach 176 by 2042. The structure is 27 ft (8.2 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNfa A789
CrossesLondon Branch
Location.1 MI South of US64
RouteCounty Highway 789
Coordinates35.1306, -84.74297
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span14 ft (4.3 m)
Deck width38 ft (11.7 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2020)
Projected traffic176 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 A789 over London Branch built?

It was built in 1983, making it 42 years old in 2025.

What condition is Nfa A789 over London Branch 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 September 2023.

How much traffic does Nfa A789 over London Branch carry?

About 110 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A789 over London Branch?

The structure is 27 ft (8.2 m) long with a longest span of 14 ft (4.3 m) and a deck 38 ft wide.

Who owns Nfa A789 over London Branch?

It is owned by the County Highway Agency.