US Bridges

Route 645 over Rock Lick

Fair

Buchanan County, Virginia · 0.21 - 700S; 0.02 - 700N · Structure no. 000000000024701

Built
1996
29 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
37 ft
2 main spans
Daily traffic
454
2014 count
Owner
State
State Highway Agency

About this bridge

Route 645 over Rock Lick is a concrete slab carrying Route 645 over Rock Lick in Buchanan County, Virginia. It was built in 1996, so it is 29 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 454 vehicles a day, roughly 7% of them trucks, projected to reach 710 by 2042. The structure is 37 ft (11.3 m) long and 28 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
CarriesRoute 645
CrossesRock Lick
Location0.21 - 700S; 0.02 - 700N
RouteCity Street 645
CountyBuchanan County
StateVirginia
Coordinates37.35648, -82.18971
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating82 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length37 ft (11.3 m)
Longest span15 ft (4.7 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic454 (2014)
Projected traffic710 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$117 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 645 over Rock Lick built?

It was built in 1996, making it 29 years old in 2025.

What condition is Route 645 over Rock Lick 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 November 2024.

How much traffic does Route 645 over Rock Lick carry?

About 454 vehicles per day (2014 count), of which roughly 7% are trucks.

How long is Route 645 over Rock Lick?

The structure is 37 ft (11.3 m) long with a longest span of 15 ft (4.7 m) and a deck 28 ft wide.

Who owns Route 645 over Rock Lick?

It is owned by the State Highway Agency.