US Bridges

Nfa A057 over Glasgow Branch

Good

Trousdale County, Tennessee · 1.2 MI N of Smith Co. · Structure no. 850A0570001

Built
1999
26 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
36 ft
2 main spans
Daily traffic
90
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A057 over Glasgow Branch is a concrete continuous culvert carrying Nfa A057 over Glasgow Branch in Trousdale County, Tennessee. It was built in 1999, so it is 26 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 90 vehicles a day, roughly 5% of them trucks, projected to reach 144 by 2041. The structure is 36 ft (10.9 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesNfa A057
CrossesGlasgow Branch
Location1.2 MI N of Smith Co.
RouteCounty Highway 57
CountyTrousdale County
StateTennessee
Coordinates36.37585, -86.07529
Functional classRural 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 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2020)
Projected traffic144 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 A057 over Glasgow Branch built?

It was built in 1999, making it 26 years old in 2025.

What condition is Nfa A057 over Glasgow 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 A057 over Glasgow Branch carry?

About 90 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Nfa A057 over Glasgow Branch?

The structure is 36 ft (10.9 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Nfa A057 over Glasgow Branch?

It is owned by the County Highway Agency.