US Bridges

Nfa A204 over Martin Branch

Fair

Humphreys County, Tennessee · 7 M. SE of Mcewen · Structure no. 430A2040003

Built
1995
30 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
38 ft
2 main spans
Daily traffic
30
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A204 over Martin Branch is a concrete continuous culvert carrying Nfa A204 over Martin Branch in Humphreys County, Tennessee. It was built in 1995, so it is 30 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 30 vehicles a day, roughly 2% of them trucks, projected to reach 48 by 2040. The structure is 38 ft (11.6 m) long and 28 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesNfa A204
CrossesMartin Branch
Location7 M. SE of Mcewen
RouteCounty Highway 204
CountyHumphreys County
StateTennessee
Coordinates36.02605, -87.58598
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2020)
Projected traffic48 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 A204 over Martin Branch built?

It was built in 1995, making it 30 years old in 2025.

What condition is Nfa A204 over Martin Branch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does Nfa A204 over Martin Branch carry?

About 30 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A204 over Martin Branch?

The structure is 38 ft (11.6 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns Nfa A204 over Martin Branch?

It is owned by the County Highway Agency.