US Bridges

Nfa A409 over Island Creek

Good

Morgan County, Tennessee · 0.6MI E Catoosa RD · Structure no. 650A4090005

Built
2023
2 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
108 ft
3 main spans
Daily traffic
150
2020 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Nfa A409 over Island Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa A409 over Island Creek in Morgan County, Tennessee. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150 vehicles a day, roughly 2% of them trucks, projected to reach 240 by 2042. The structure is 108 ft (32.9 m) long and 22 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesNfa A409
CrossesIsland Creek
Location0.6MI E Catoosa RD
RouteCounty Highway 409
CountyMorgan County
StateTennessee
Coordinates36.05302, -84.66687
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length108 ft (32.9 m)
Longest span33 ft (10.2 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic240 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$874,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A409 over Island Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is Nfa A409 over Island 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 May 2023.

How much traffic does Nfa A409 over Island Creek carry?

About 150 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A409 over Island Creek?

The structure is 108 ft (32.9 m) long with a longest span of 33 ft (10.2 m) and a deck 22 ft wide.

Who owns Nfa A409 over Island Creek?

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