US Bridges

Nfa 812 (sa 0902) over Grassy Hollow Creek

Good

Carroll County, Tennessee · 2.5 MI NW JCT SR1&SR104 · Structure no. 09008120001

Built
1959
66 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
408
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 812 (sa 0902) over Grassy Hollow Creek is a concrete continuous culvert carrying Nfa 812 (sa 0902) over Grassy Hollow Creek in Carroll County, Tennessee. It was built in 1959, so it is 66 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 408 vehicles a day, roughly 3% of them trucks, projected to reach 653 by 2042. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNfa 812 (sa 0902)
CrossesGrassy Hollow Creek
Location2.5 MI NW JCT SR1&SR104
RouteCounty Highway 812
CountyCarroll County
StateTennessee
Coordinates35.88039, -88.59527
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length30 ft (9.1 m)
Longest span13 ft (4 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic408 (2021)
Projected traffic653 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$226,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 812 (sa 0902) over Grassy Hollow Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is Nfa 812 (sa 0902) over Grassy Hollow 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 July 2023.

How much traffic does Nfa 812 (sa 0902) over Grassy Hollow Creek carry?

About 408 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 812 (sa 0902) over Grassy Hollow Creek?

The structure is 30 ft (9.1 m) long with a longest span of 13 ft (4 m) and a deck 28 ft wide.

Who owns Nfa 812 (sa 0902) over Grassy Hollow Creek?

It is owned by the County Highway Agency.