US Bridges

Nfa 1261 (sa 7604) over Brimstone Creek

Fair

Scott County, Tennessee · 5.5 M SE of Robbins · Structure no. 76S23420013

Built
1981
44 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
122 ft
3 main spans
Daily traffic
232
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1261 (sa 7604) over Brimstone Creek is a steel stringer/multi-beam or girder carrying Nfa 1261 (sa 7604) over Brimstone Creek in Scott County, Tennessee. It was built in 1981, so it is 44 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 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 232 vehicles a day, roughly 3% of them trucks, projected to reach 285 by 2042. The structure is 122 ft (37.2 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1261 (sa 7604)
CrossesBrimstone Creek
Location5.5 M SE of Robbins
RouteCounty Highway 1261
CountyScott County
StateTennessee
Coordinates36.30491, -84.50519
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length122 ft (37.2 m)
Longest span41 ft (12.5 m)
Deck width25 ft (7.7 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic232 (2021)
Projected traffic285 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1261 (sa 7604) over Brimstone Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Nfa 1261 (sa 7604) over Brimstone 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 September 2024.

How much traffic does Nfa 1261 (sa 7604) over Brimstone Creek carry?

About 232 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1261 (sa 7604) over Brimstone Creek?

The structure is 122 ft (37.2 m) long with a longest span of 41 ft (12.5 m) and a deck 25 ft wide.

Who owns Nfa 1261 (sa 7604) over Brimstone Creek?

It is owned by the County Highway Agency.