US Bridges

Nfa A125 over Grassy Branch

Good

Maury County, Tennessee · Port Royal Rd-Maury CO · Structure no. 600A1250003

Built
1984
41 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
33 ft
2 main spans
Daily traffic
4,482
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa A125 over Grassy Branch is a concrete continuous culvert carrying Nfa A125 over Grassy Branch in Maury County, Tennessee. It was built in 1984, so it is 41 years old, younger 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 4,482 vehicles a day, roughly 3% of them trucks, projected to reach 5,104 by 2041. The structure is 33 ft (10.1 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesNfa A125
CrossesGrassy Branch
LocationPort Royal Rd-Maury CO
RouteCounty Highway 6067
Coordinates35.74462, -86.89367
Functional classUrban 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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span15 ft (4.6 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,482 (2021)
Projected traffic5,104 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$197,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A125 over Grassy Branch built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa A125 over Grassy Branch 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 April 2024.

How much traffic does Nfa A125 over Grassy Branch carry?

About 4,482 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa A125 over Grassy Branch?

The structure is 33 ft (10.1 m) long with a longest span of 15 ft (4.6 m) and a deck 26 ft wide.

Who owns Nfa A125 over Grassy Branch?

It is owned by the County Highway Agency.