US Bridges

SR-13 over I-40

Fair

Humphreys County, Tennessee · At I40 · Structure no. 43I00400013

Built
1959
66 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
232 ft
4 main spans
Daily traffic
2,261
2021 count
Owner
State
State Highway Agency

About this bridge

SR-13 over I-40 is a concrete continuous tee beam carrying SR-13 over I-40 in Humphreys County, Tennessee. It was built in 1959, so it is 66 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 2,261 vehicles a day, roughly 7% of them trucks, projected to reach 3,618 by 2042. The structure is 232 ft (70.7 m) long and 34 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSR-13
CrossesI-40
LocationAt I40
RouteState Highway 13
CountyHumphreys County
StateTennessee
Coordinates35.87942, -87.80183
Functional classRural Minor 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
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.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span67 ft (20.4 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,261 (2021)
Projected traffic3,618 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$661,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-13 over I-40 built?

It was built in 1959, making it 66 years old in 2025.

What condition is SR-13 over I-40 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 July 2023.

How much traffic does SR-13 over I-40 carry?

About 2,261 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR-13 over I-40?

The structure is 232 ft (70.7 m) long with a longest span of 67 ft (20.4 m) and a deck 34 ft wide.

Who owns SR-13 over I-40?

It is owned by the State Highway Agency.