US Bridges

FAP 73 347609A over CSX Railroad

Good

Blount County, Tennessee · Nw.Of Maryville · Structure no. 05SR0730005

Built
1977
48 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
161 ft
3 main spans
Daily traffic
24,642
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 73 347609A over CSX Railroad is a prestressed concrete stringer/multi-beam or girder carrying FAP 73 347609A over CSX Railroad in Blount County, Tennessee. It was built in 1977, so it is 48 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 24,642 vehicles a day, roughly 9% of them trucks, projected to reach 43,750 by 2042. The structure is 161 ft (49 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAP 73 347609A
CrossesCSX Railroad
LocationNw.Of Maryville
RouteU.S. Route 321
CountyBlount County
StateTennessee
Coordinates35.75602, -84.03095
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length161 ft (49 m)
Longest span54 ft (16.5 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,642 (2021)
Projected traffic43,750 by 2042
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 FAP 73 347609A over CSX Railroad built?

It was built in 1977, making it 48 years old in 2025.

What condition is FAP 73 347609A over CSX Railroad 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 October 2023.

How much traffic does FAP 73 347609A over CSX Railroad carry?

About 24,642 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAP 73 347609A over CSX Railroad?

The structure is 161 ft (49 m) long with a longest span of 54 ft (16.5 m) and a deck 44 ft wide.

Who owns FAP 73 347609A over CSX Railroad?

It is owned by the State Highway Agency.