US Bridges

Is 464 Sbl over South Norfolk Basin

Fair

Chesapeake city, Virginia · 2.54 MI FR US 13 · Structure no. 000000000021968

Built
1980
45 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
465 ft
10 main spans
Daily traffic
24,404
2022 count
Owner
State
State Highway Agency

About this bridge

Is 464 Sbl over South Norfolk Basin is a prestressed concrete stringer/multi-beam or girder carrying Is 464 Sbl over South Norfolk Basin in Chesapeake city, Virginia. It was built in 1980, so it is 45 years old, younger than the Virginia average of 50.7 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 24,404 vehicles a day, projected to reach 31,113 by 2042. The structure is 465 ft (141.7 m) long and 85 ft wide.

CarriesIs 464 Sbl
CrossesSouth Norfolk Basin
Location2.54 MI FR US 13
RouteInterstate 464
Coordinates36.80861, -76.27979
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating89.9 US tons
Inventory rating69 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20 + Mod
Structure length465 ft (141.7 m)
Longest span48 ft (14.6 m)
Deck width85 ft (25.9 m)
Roadway width72 ft (22 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,404 (2022)
Projected traffic31,113 by 2042
Trucks0%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Is 464 Sbl over South Norfolk Basin built?

It was built in 1980, making it 45 years old in 2025.

What condition is Is 464 Sbl over South Norfolk Basin 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 Is 464 Sbl over South Norfolk Basin carry?

About 24,404 vehicles per day (2022 count).

How long is Is 464 Sbl over South Norfolk Basin?

The structure is 465 ft (141.7 m) long with a longest span of 48 ft (14.6 m) and a deck 85 ft wide.

Who owns Is 464 Sbl over South Norfolk Basin?

It is owned by the State Highway Agency.