US Bridges

Nfa 1855 (sa 6303) over Sullivan Branch

Fair

Montgomery County, Tennessee · 7 M. S. Palmyra. · Structure no. 63018550001

Built
1964
61 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
47 ft
3 main spans
Daily traffic
272
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1855 (sa 6303) over Sullivan Branch is a concrete continuous culvert carrying Nfa 1855 (sa 6303) over Sullivan Branch in Montgomery County, Tennessee. It was built in 1964, so it is 61 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 6 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 272 vehicles a day, roughly 3% of them trucks, projected to reach 352 by 2040. The structure is 47 ft (14.3 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesNfa 1855 (sa 6303)
CrossesSullivan Branch
Location7 M. S. Palmyra.
RouteCounty Highway 1855
CountyMontgomery County
StateTennessee
Coordinates36.33445, -87.48785
Functional classRural Minor Collector

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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating49.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length47 ft (14.3 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 traffic272 (2021)
Projected traffic352 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 1855 (sa 6303) over Sullivan Branch built?

It was built in 1964, making it 61 years old in 2025.

What condition is Nfa 1855 (sa 6303) over Sullivan 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 November 2024.

How much traffic does Nfa 1855 (sa 6303) over Sullivan Branch carry?

About 272 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1855 (sa 6303) over Sullivan Branch?

The structure is 47 ft (14.3 m) long with a longest span of 10 ft (3 m).

Who owns Nfa 1855 (sa 6303) over Sullivan Branch?

It is owned by the County Highway Agency.