US Bridges

Nfa 1293 (sa 8701) over Bullrun Creek

Fair

Union County, Tennessee · W of SR33 at Knox CO Line · Structure no. 87012930001

Built
1940
85 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
1,255
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1293 (sa 8701) over Bullrun Creek is a steel stringer/multi-beam or girder carrying Nfa 1293 (sa 8701) over Bullrun Creek in Union County, Tennessee. It was built in 1940, so it is 85 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 1,255 vehicles a day, roughly 9% of them trucks, projected to reach 2,128 by 2041. The structure is 34 ft (10.3 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1293 (sa 8701)
CrossesBullrun Creek
LocationW of SR33 at Knox CO Line
RouteCounty Highway 1293
CountyUnion County
StateTennessee
Coordinates36.17653, -83.92408
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating29.8 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length34 ft (10.3 m)
Longest span30 ft (9 m)
Deck width27 ft (8.1 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,255 (2021)
Projected traffic2,128 by 2041
Trucks9%
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 with deck rehabilitation or replacement
Estimated improvement cost$158,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1293 (sa 8701) over Bullrun Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Nfa 1293 (sa 8701) over Bullrun 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 July 2024.

How much traffic does Nfa 1293 (sa 8701) over Bullrun Creek carry?

About 1,255 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Nfa 1293 (sa 8701) over Bullrun Creek?

The structure is 34 ft (10.3 m) long with a longest span of 30 ft (9 m) and a deck 27 ft wide.

Who owns Nfa 1293 (sa 8701) over Bullrun Creek?

It is owned by the County Highway Agency.