US Bridges

Nfa D257 over Briley Pkwy.

Poor

Davidson County, Tennessee · 3 Mw of SR 12 · Structure no. 19SR1550023

Built
1989
36 years old
Condition
Poor
inspected April 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
232 ft
2 main spans
Daily traffic
4,350
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa D257 over Briley Pkwy. is a concrete continuous box beam or girders - multiple carrying Nfa D257 over Briley Pkwy. in Davidson County, Tennessee. It was built in 1989, so it is 36 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 4,350 vehicles a day, roughly 2% of them trucks, projected to reach 6,960 by 2042. The structure is 232 ft (70.7 m) long and 74 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesNfa D257
CrossesBriley Pkwy.
Location3 Mw of SR 12
RouteCity Street 257
CountyDavidson County
StateTennessee
Coordinates36.18763, -86.8629
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span138 ft (42.1 m)
Deck width74 ft (22.6 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,350 (2020)
Projected traffic6,960 by 2042
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa D257 over Briley Pkwy. built?

It was built in 1989, making it 36 years old in 2025.

What condition is Nfa D257 over Briley Pkwy. in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does Nfa D257 over Briley Pkwy. carry?

About 4,350 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa D257 over Briley Pkwy.?

The structure is 232 ft (70.7 m) long with a longest span of 138 ft (42.1 m) and a deck 74 ft wide.

Who owns Nfa D257 over Briley Pkwy.?

It is owned by the State Highway Agency.