US Bridges

I40 over Big Muddy (overflow)

Fair

Haywood County, Tennessee · 0.2 M SE of Douglas · Structure no. 38I00400008

Built
1962
63 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete
Length
86 ft
3 main spans
Daily traffic
28,765
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over Big Muddy (overflow) is a concrete tee beam carrying I40 over Big Muddy (overflow) in Haywood County, Tennessee. It was built in 1962, so it is 63 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.

It carries about 28,765 vehicles a day, roughly 8% of them trucks, projected to reach 42,576 by 2042. The structure is 86 ft (26.1 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI40
CrossesBig Muddy (overflow)
Location0.2 M SE of Douglas
RouteInterstate 40
Coordinates35.42072, -89.36575
Functional classRural Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length86 ft (26.1 m)
Longest span29 ft (8.7 m)
Deck width47 ft (14.3 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,765 (2021)
Projected traffic42,576 by 2042
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I40 over Big Muddy (overflow) built?

It was built in 1962, making it 63 years old in 2025.

What condition is I40 over Big Muddy (overflow) 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 August 2023.

How much traffic does I40 over Big Muddy (overflow) carry?

About 28,765 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is I40 over Big Muddy (overflow)?

The structure is 86 ft (26.1 m) long with a longest span of 29 ft (8.7 m) and a deck 47 ft wide.

Who owns I40 over Big Muddy (overflow)?

It is owned by the State Highway Agency.