US Bridges

Nfa 4784 244009L over CSX Railroad

Fair

Washington County, Tennessee · S of SR36 at Sullivan CO · Structure no. 900A3370001

Built
1987
38 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
905
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 4784 244009L over CSX Railroad is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa 4784 244009L over CSX Railroad in Washington County, Tennessee. It was built in 1987, so it is 38 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 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 905 vehicles a day, roughly 3% of them trucks, projected to reach 1,448 by 2042. The structure is 150 ft (45.7 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNfa 4784 244009L
CrossesCSX Railroad
LocationS of SR36 at Sullivan CO
RouteCounty Highway 4784
Coordinates36.43035, -82.47034
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating31.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span50 ft (15.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic905 (2021)
Projected traffic1,448 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa 4784 244009L over CSX Railroad built?

It was built in 1987, making it 38 years old in 2025.

What condition is Nfa 4784 244009L over CSX Railroad 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 June 2024.

How much traffic does Nfa 4784 244009L over CSX Railroad carry?

About 905 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 4784 244009L over CSX Railroad?

The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.3 m) and a deck 28 ft wide.

Who owns Nfa 4784 244009L over CSX Railroad?

It is owned by the County Highway Agency.