US Bridges

Nfa A490 over Branch

Fair

Morgan County, Tennessee · Old SR29 - N of Wartburg · Structure no. 65SR0290017

Built
1928
97 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete Continuous
Length
33 ft
2 main spans
Daily traffic
130
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A490 over Branch is a concrete continuous culvert carrying Nfa A490 over Branch in Morgan County, Tennessee. It was built in 1928, so it is 97 years old, older 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 130 vehicles a day, roughly 2% of them trucks, projected to reach 208 by 2041. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A490
CrossesBranch
LocationOld SR29 - N of Wartburg
RouteCounty Highway 490
CountyMorgan County
StateTennessee
Coordinates36.11773, -84.60805
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.6 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2020)
Projected traffic208 by 2041
Trucks2%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$239,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A490 over Branch built?

It was built in 1928, making it 97 years old in 2025.

What condition is Nfa A490 over 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 February 2025.

How much traffic does Nfa A490 over Branch carry?

About 130 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A490 over Branch?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns Nfa A490 over Branch?

It is owned by the County Highway Agency.