US Bridges

Nfa A174 over East Fork Mulberry Creek

Good

Lincoln County, Tennessee · 0.8 M. Ne. Mulberry · Structure no. 520A1740001

Built
1993
32 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
145 ft
3 main spans
Daily traffic
80
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A174 over East Fork Mulberry Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa A174 over East Fork Mulberry Creek in Lincoln County, Tennessee. It was built in 1993, so it is 32 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 80 vehicles a day, roughly 2% of them trucks, projected to reach 128 by 2039. The structure is 145 ft (44.2 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNfa A174
CrossesEast Fork Mulberry Creek
Location0.8 M. Ne. Mulberry
RouteCounty Highway 174
Coordinates35.21729, -86.44519
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating31.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length145 ft (44.2 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2020)
Projected traffic128 by 2039
Trucks2%
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 A174 over East Fork Mulberry Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is Nfa A174 over East Fork Mulberry Creek 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 A174 over East Fork Mulberry Creek carry?

About 80 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A174 over East Fork Mulberry Creek?

The structure is 145 ft (44.2 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns Nfa A174 over East Fork Mulberry Creek?

It is owned by the County Highway Agency.