US Bridges

I-95 Sbl over Route 646

Fair

Sussex County, Virginia · 9.79 MI FR Route 40 · Structure no. 000000000018264

Built
1982
43 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
125 ft
3 main spans
Daily traffic
19,380
2022 count
Owner
State
State Highway Agency

About this bridge

I-95 Sbl over Route 646 is a prestressed concrete stringer/multi-beam or girder carrying I-95 Sbl over Route 646 in Sussex County, Virginia. It was built in 1982, so it is 43 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 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 19,380 vehicles a day, roughly 1% of them trucks, projected to reach 24,197 by 2042. The structure is 125 ft (38.1 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-95 Sbl
CrossesRoute 646
Location9.79 MI FR Route 40
RouteInterstate 95
Coordinates36.81636, -77.45632
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating64 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length125 ft (38.1 m)
Longest span45 ft (13.7 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,380 (2022)
Projected traffic24,197 by 2042
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-95 Sbl over Route 646 built?

It was built in 1982, making it 43 years old in 2025.

What condition is I-95 Sbl over Route 646 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 October 2024.

How much traffic does I-95 Sbl over Route 646 carry?

About 19,380 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-95 Sbl over Route 646?

The structure is 125 ft (38.1 m) long with a longest span of 45 ft (13.7 m) and a deck 44 ft wide.

Who owns I-95 Sbl over Route 646?

It is owned by the State Highway Agency.