US Bridges

Nfa 1262 (sa 4727) over Holston River

FairPosted for load

Knox County, Tennessee · N of US11E-NEAR CO Line · Structure no. 47S25050009

Built
1930
95 years old
Condition
Fair
inspected May 2024
Type
Arch - Thru
Concrete
Length
785 ft
3 main spans
Daily traffic
8,721
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1262 (sa 4727) over Holston River is a concrete arch - thru carrying Nfa 1262 (sa 4727) over Holston River in Knox County, Tennessee. It was built in 1930, so it is 95 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. Its operating status is: posted for load restriction.

It carries about 8,721 vehicles a day, roughly 3% of them trucks, projected to reach 13,290 by 2042. The structure is 785 ft (239.3 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNfa 1262 (sa 4727)
CrossesHolston River
LocationN of US11E-NEAR CO Line
RouteCounty Highway 1262
CountyKnox County
StateTennessee
Coordinates36.05971, -83.70405
Functional classRural Minor 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeArch - Thru
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3 (+5 approach)
Design loadUnknown
Structure length785 ft (239.3 m)
Longest span222 ft (67.8 m)
Deck width34 ft (10.3 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic8,721 (2021)
Projected traffic13,290 by 2042
Trucks3%
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 statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$14.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1262 (sa 4727) over Holston River built?

It was built in 1930, making it 95 years old in 2025.

What condition is Nfa 1262 (sa 4727) over Holston River 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 May 2024.

How much traffic does Nfa 1262 (sa 4727) over Holston River carry?

About 8,721 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1262 (sa 4727) over Holston River?

The structure is 785 ft (239.3 m) long with a longest span of 222 ft (67.8 m) and a deck 34 ft wide.

Who owns Nfa 1262 (sa 4727) over Holston River?

It is owned by the County Highway Agency.