US Bridges

Old Orch.Loop 645 over Brown River

Fair

Patrick County, Virginia · 1.00 Rt 742; 0.00 Rt 647 · Structure no. 000000000013309

Built
1965
60 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
179
2014 count
Owner
State
State Highway Agency

About this bridge

Old Orch.Loop 645 over Brown River is a prestressed concrete box beam or girders - multiple carrying Old Orch.Loop 645 over Brown River in Patrick County, Virginia. It was built in 1965, so it is 60 years old, older 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 179 vehicles a day, projected to reach 207 by 2045. The structure is 29 ft (8.9 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesOld Orch.Loop 645
CrossesBrown River
Location1.00 Rt 742; 0.00 Rt 647
RouteCounty Highway 645
Coordinates36.5842, -80.38344
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72 US tons
Inventory rating55 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length29 ft (8.9 m)
Longest span29 ft (8.8 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic179 (2014)
Projected traffic207 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Orch.Loop 645 over Brown River built?

It was built in 1965, making it 60 years old in 2025.

What condition is Old Orch.Loop 645 over Brown River 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 April 2023.

How much traffic does Old Orch.Loop 645 over Brown River carry?

About 179 vehicles per day (2014 count).

How long is Old Orch.Loop 645 over Brown River?

The structure is 29 ft (8.9 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.

Who owns Old Orch.Loop 645 over Brown River?

It is owned by the State Highway Agency.