US Bridges

Nfa 1256 (sa 4716) over Beaver Creek

Fair

Knox County, Tennessee · Heiskell Rd-W of I75 · Structure no. 47S24100009

Built
1950
75 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
107 ft
2 main spans
Daily traffic
8,132
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1256 (sa 4716) over Beaver Creek is a steel continuous stringer/multi-beam or girder carrying Nfa 1256 (sa 4716) over Beaver Creek in Knox 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 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 8,132 vehicles a day, roughly 4% of them trucks, projected to reach 13,011 by 2042. The structure is 107 ft (32.5 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1256 (sa 4716)
CrossesBeaver Creek
LocationHeiskell Rd-W of I75
RouteCounty Highway 1256
CountyKnox County
StateTennessee
Coordinates36.03962, -84.00615
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length107 ft (32.5 m)
Longest span52 ft (15.8 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,132 (2021)
Projected traffic13,011 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$611,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1256 (sa 4716) over Beaver Creek built?

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

What condition is Nfa 1256 (sa 4716) over Beaver Creek 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 1256 (sa 4716) over Beaver Creek carry?

About 8,132 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Nfa 1256 (sa 4716) over Beaver Creek?

The structure is 107 ft (32.5 m) long with a longest span of 52 ft (15.8 m) and a deck 29 ft wide.

Who owns Nfa 1256 (sa 4716) over Beaver Creek?

It is owned by the County Highway Agency.