US Bridges

Nfa 2091 (sa 8504) over Rocky Creek

Good

Trousdale County, Tennessee · 1.5 MI E of Sumner Co. · Structure no. 85020910001

Built
1960
65 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
1,045
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2091 (sa 8504) over Rocky Creek is a concrete continuous culvert carrying Nfa 2091 (sa 8504) over Rocky Creek in Trousdale County, Tennessee. It was built in 1960, so it is 65 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,045 vehicles a day, roughly 3% of them trucks, projected to reach 1,568 by 2041. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesNfa 2091 (sa 8504)
CrossesRocky Creek
Location1.5 MI E of Sumner Co.
RouteCounty Highway 2091
CountyTrousdale County
StateTennessee
Coordinates36.42075, -86.24968
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,045 (2021)
Projected traffic1,568 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 2091 (sa 8504) over Rocky Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa 2091 (sa 8504) over Rocky Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does Nfa 2091 (sa 8504) over Rocky Creek carry?

About 1,045 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2091 (sa 8504) over Rocky Creek?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m).

Who owns Nfa 2091 (sa 8504) over Rocky Creek?

It is owned by the County Highway Agency.