US Bridges

Nfa 1232 (sa 6504) over Machine Branch

Good

Morgan County, Tennessee · Coal Hill Rd. · Structure no. 65S25230001

Built
2011
14 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
45 ft
3 main spans
Daily traffic
797
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1232 (sa 6504) over Machine Branch is a concrete continuous culvert carrying Nfa 1232 (sa 6504) over Machine Branch in Morgan County, Tennessee. It was built in 2011, so it is 14 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 797 vehicles a day, roughly 3% of them trucks, projected to reach 1,200 by 2041. The structure is 45 ft (13.7 m) long and 39 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1232 (sa 6504)
CrossesMachine Branch
LocationCoal Hill Rd.
RouteCounty Highway 1232
CountyMorgan County
StateTennessee
Coordinates35.99277, -84.47867
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length45 ft (13.7 m)
Longest span15 ft (4.5 m)
Deck width39 ft (11.9 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic797 (2021)
Projected traffic1,200 by 2041
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1232 (sa 6504) over Machine Branch built?

It was built in 2011, making it 14 years old in 2025.

What condition is Nfa 1232 (sa 6504) over Machine 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 2023.

How much traffic does Nfa 1232 (sa 6504) over Machine Branch carry?

About 797 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1232 (sa 6504) over Machine Branch?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.5 m) and a deck 39 ft wide.

Who owns Nfa 1232 (sa 6504) over Machine Branch?

It is owned by the County Highway Agency.