US Bridges

Natural Chimney RD over North River

FairPosted for load

Augusta County, Virginia · 0.03 Rt 730 - 0.32 Rt 936 · Structure no. 000000000002230

Built
1951
74 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
244 ft
3 main spans
Daily traffic
936
2022 count
Owner
State
State Highway Agency

About this bridge

Natural Chimney RD over North River is a steel continuous stringer/multi-beam or girder carrying Natural Chimney RD over North River in Augusta County, Virginia. It was built in 1951, so it is 74 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 936 vehicles a day, roughly 2% of them trucks, projected to reach 1,221 by 2040. The structure is 244 ft (74.3 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesNatural Chimney RD
CrossesNorth River
Location0.03 Rt 730 - 0.32 Rt 936
RouteCounty Highway 731
Coordinates38.35635, -79.09084
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating34 US tons
Inventory rating20 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length244 ft (74.3 m)
Longest span93 ft (28.2 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic936 (2022)
Projected traffic1,221 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$168 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Natural Chimney RD over North River built?

It was built in 1951, making it 74 years old in 2025.

What condition is Natural Chimney RD over North 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 October 2024.

How much traffic does Natural Chimney RD over North River carry?

About 936 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Natural Chimney RD over North River?

The structure is 244 ft (74.3 m) long with a longest span of 93 ft (28.2 m) and a deck 24 ft wide.

Who owns Natural Chimney RD over North River?

It is owned by the State Highway Agency.