US Bridges

FAU 45 over I40

Fair

Davidson County, Tennessee · Old Hickory BLVD/I40 · Structure no. 19I00400141

Built
1991
34 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
223 ft
2 main spans
Daily traffic
51,890
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 45 over I40 is a steel continuous stringer/multi-beam or girder carrying FAU 45 over I40 in Davidson County, Tennessee. It was built in 1991, so it is 34 years old, younger 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.

It carries about 51,890 vehicles a day, roughly 7% of them trucks, projected to reach 66,726 by 2042. The structure is 223 ft (68 m) long and 88 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesFAU 45
CrossesI40
LocationOld Hickory BLVD/I40
RouteState Highway SR045
CountyDavidson County
StateTennessee
Coordinates36.17001, -86.6012
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length223 ft (68 m)
Longest span111 ft (33.8 m)
Deck width88 ft (26.8 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,890 (2021)
Projected traffic66,726 by 2042
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$805,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 45 over I40 built?

It was built in 1991, making it 34 years old in 2025.

What condition is FAU 45 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 January 2024.

How much traffic does FAU 45 over I40 carry?

About 51,890 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is FAU 45 over I40?

The structure is 223 ft (68 m) long with a longest span of 111 ft (33.8 m) and a deck 88 ft wide.

Who owns FAU 45 over I40?

It is owned by the State Highway Agency.