US Bridges

FAS 419 over Byrds CR & Lake (cmsp)

FairPosted for load

Cumberland County, Tennessee · In Cumberland Mt State Pk · Structure no. 18011660001

Built
1936
89 years old
Condition
Fair
inspected March 2024
Type
Arch - Deck
Masonry
Length
318 ft
17 main spans
Daily traffic
1,794
2021 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

FAS 419 over Byrds CR & Lake (cmsp) is a masonry arch - deck carrying FAS 419 over Byrds CR & Lake (cmsp) in Cumberland County, Tennessee. It was built in 1936, so it is 89 years old, older 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. Its operating status is: posted for load restriction.

It carries about 1,794 vehicles a day, roughly 3% of them trucks, projected to reach 2,870 by 2042. The structure is 318 ft (96.9 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAS 419
CrossesByrds CR & Lake (cmsp)
LocationIn Cumberland Mt State Pk
RouteState Highway 419
CountyCumberland County
StateTennessee
Coordinates35.90072, -84.99873
Functional classUrban 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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckConcrete, cast-in-place
Main spans17
Design loadH 15
Structure length318 ft (96.9 m)
Longest span19 ft (5.8 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,794 (2021)
Projected traffic2,870 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 419 over Byrds CR & Lake (cmsp) built?

It was built in 1936, making it 89 years old in 2025.

What condition is FAS 419 over Byrds CR & Lake (cmsp) 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 March 2024.

How much traffic does FAS 419 over Byrds CR & Lake (cmsp) carry?

About 1,794 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is FAS 419 over Byrds CR & Lake (cmsp)?

The structure is 318 ft (96.9 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.

Who owns FAS 419 over Byrds CR & Lake (cmsp)?

It is owned by the State Park, Forest, or Reservation Agency.