US Bridges

Nfa 2399 (sa 4735) over Branch

Good

Knox County, Tennessee · Midway Rd-S of I40 · Structure no. 47023990003

Built
1987
38 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
2,136
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2399 (sa 4735) over Branch is a concrete continuous culvert carrying Nfa 2399 (sa 4735) over Branch in Knox County, Tennessee. It was built in 1987, so it is 38 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 2,136 vehicles a day, roughly 5% of them trucks, projected to reach 3,418 by 2042. The structure is 31 ft (9.5 m) long and 60 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNfa 2399 (sa 4735)
CrossesBranch
LocationMidway Rd-S of I40
RouteCounty Highway 2399
Coordinates35.98085, -83.69375
Functional classRural Major Collector

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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.5 m)
Longest span14 ft (4.3 m)
Deck width60 ft (18.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,136 (2021)
Projected traffic3,418 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 2399 (sa 4735) over Branch built?

It was built in 1987, making it 38 years old in 2025.

What condition is Nfa 2399 (sa 4735) over 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 March 2024.

How much traffic does Nfa 2399 (sa 4735) over Branch carry?

About 2,136 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Nfa 2399 (sa 4735) over Branch?

The structure is 31 ft (9.5 m) long with a longest span of 14 ft (4.3 m) and a deck 60 ft wide.

Who owns Nfa 2399 (sa 4735) over Branch?

It is owned by the County Highway Agency.