US Bridges

FAS 310 over CSX Railroad

Fair

McMinn County, Tennessee · .05 from US 411 · Structure no. 54SR3100001

Built
1982
43 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
217 ft
3 main spans
Daily traffic
2,604
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 310 over CSX Railroad is a prestressed concrete continuous box beam or girders - single or spread carrying FAS 310 over CSX Railroad in McMinn County, Tennessee. It was built in 1982, so it is 43 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 2,604 vehicles a day, roughly 5% of them trucks, projected to reach 4,166 by 2042. The structure is 217 ft (66.1 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFAS 310
CrossesCSX Railroad
Location.05 from US 411
RouteState Highway 310
CountyMcMinn County
StateTennessee
Coordinates35.32883, -84.5212
Functional classRural Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionApril 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 geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length217 ft (66.1 m)
Longest span92 ft (28 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,604 (2021)
Projected traffic4,166 by 2042
Trucks5%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAS 310 over CSX Railroad built?

It was built in 1982, making it 43 years old in 2025.

What condition is FAS 310 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 April 2023.

How much traffic does FAS 310 over CSX Railroad carry?

About 2,604 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 310 over CSX Railroad?

The structure is 217 ft (66.1 m) long with a longest span of 92 ft (28 m) and a deck 46 ft wide.

Who owns FAS 310 over CSX Railroad?

It is owned by the State Highway Agency.