US Bridges

Nfa 1423 (sa 5813) over Small Branch

Good

Marion County, Tennessee · 5.5 MI NW JCT SR27&SR283 · Structure no. 58021650005

Built
1930
95 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
700
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1423 (sa 5813) over Small Branch is a concrete continuous culvert carrying Nfa 1423 (sa 5813) over Small Branch in Marion County, Tennessee. It was built in 1930, so it is 95 years old, older 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 700 vehicles a day, roughly 3% of them trucks, projected to reach 864 by 2040. The structure is 21 ft (6.3 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1423 (sa 5813)
CrossesSmall Branch
Location5.5 MI NW JCT SR27&SR283
RouteCounty Highway 1423
CountyMarion County
StateTennessee
Coordinates35.26635, -85.46907
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2021)
Projected traffic864 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$98,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1423 (sa 5813) over Small Branch built?

It was built in 1930, making it 95 years old in 2025.

What condition is Nfa 1423 (sa 5813) over Small 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 2024.

How much traffic does Nfa 1423 (sa 5813) over Small Branch carry?

About 700 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1423 (sa 5813) over Small Branch?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 24 ft wide.

Who owns Nfa 1423 (sa 5813) over Small Branch?

It is owned by the County Highway Agency.