US Bridges

Nfa 1405 (sa 4505) over I40

Fair

Jefferson County, Tennessee · First Exit in County · Structure no. 45I00400025

Built
1973
52 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
465 ft
5 main spans
Daily traffic
1,764
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa 1405 (sa 4505) over I40 is a concrete continuous box beam or girders - single or spread carrying Nfa 1405 (sa 4505) over I40 in Jefferson County, Tennessee. It was built in 1973, so it is 52 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,764 vehicles a day, roughly 3% of them trucks, projected to reach 2,822 by 2042. The structure is 465 ft (141.6 m) long and 51 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesNfa 1405 (sa 4505)
CrossesI40
LocationFirst Exit in County
RouteCounty Highway 1405
CountyJefferson County
StateTennessee
Coordinates36.00818, -83.53028
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.1 US tons
Inventory rating19 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length465 ft (141.6 m)
Longest span114 ft (34.8 m)
Deck width51 ft (15.4 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,764 (2021)
Projected traffic2,822 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1405 (sa 4505) over I40 built?

It was built in 1973, making it 52 years old in 2025.

What condition is Nfa 1405 (sa 4505) over I40 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 June 2024.

How much traffic does Nfa 1405 (sa 4505) over I40 carry?

About 1,764 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1405 (sa 4505) over I40?

The structure is 465 ft (141.6 m) long with a longest span of 114 ft (34.8 m) and a deck 51 ft wide.

Who owns Nfa 1405 (sa 4505) over I40?

It is owned by the State Highway Agency.