US Bridges

Nfa A310 over Cascade Branch

Fair

Bedford County, Tennessee · 0.5 M. Se. Normandy. · Structure no. 020A3100003

Built
1950
75 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
280
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A310 over Cascade Branch is a steel stringer/multi-beam or girder carrying Nfa A310 over Cascade Branch in Bedford County, Tennessee. It was built in 1950, so it is 75 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 280 vehicles a day, roughly 2% of them trucks, projected to reach 448 by 2041. The structure is 30 ft (9.2 m) long and 22 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesNfa A310
CrossesCascade Branch
Location0.5 M. Se. Normandy.
RouteCounty Highway 310
CountyBedford County
StateTennessee
Coordinates35.44645, -86.25446
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
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 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
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.2 m)
Longest span29 ft (8.8 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic280 (2020)
Projected traffic448 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$115,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A310 over Cascade Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Nfa A310 over Cascade 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 January 2025.

How much traffic does Nfa A310 over Cascade Branch carry?

About 280 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A310 over Cascade Branch?

The structure is 30 ft (9.2 m) long with a longest span of 29 ft (8.8 m) and a deck 22 ft wide.

Who owns Nfa A310 over Cascade Branch?

It is owned by the County Highway Agency.