US Bridges

I40E.BUS US421 over I40

Fair

Guilford County, North Carolina · 0.2 Mi. E. Jct. SR2007 · Structure no. 000000000810616

Built
1991
34 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
344 ft
4 main spans
Daily traffic
24,250
2020 count
Owner
State
State Highway Agency

About this bridge

I40E.BUS US421 over I40 is a steel stringer/multi-beam or girder carrying I40E.BUS US421 over I40 in Guilford County, North Carolina. It was built in 1991, so it is 34 years old, younger than the North Carolina average of 38.7 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 24,250 vehicles a day, roughly 12% of them trucks, projected to reach 48,500 by 2040. The structure is 344 ft (104.8 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI40E.BUS US421
CrossesI40
Location0.2 Mi. E. Jct. SR2007
RouteInterstate 40
CountyGuilford County
StateNorth Carolina
Coordinates36.09767, -80.01576
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating73 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length344 ft (104.8 m)
Longest span103 ft (31.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,250 (2020)
Projected traffic48,500 by 2040
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40E.BUS US421 over I40 built?

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

What condition is I40E.BUS US421 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 August 2024.

How much traffic does I40E.BUS US421 over I40 carry?

About 24,250 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is I40E.BUS US421 over I40?

The structure is 344 ft (104.8 m) long with a longest span of 103 ft (31.3 m) and a deck 43 ft wide.

Who owns I40E.BUS US421 over I40?

It is owned by the State Highway Agency.