US Bridges

Mitchell RD/636 over Smith River

Good

Henry County, Virginia · 0.90-RT 697; 1.00-RT 632 · Structure no. 000000000025266

Built
1998
27 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
352 ft
4 main spans
Daily traffic
193
2022 count
Owner
State
State Highway Agency

About this bridge

Mitchell RD/636 over Smith River is a prestressed concrete continuous stringer/multi-beam or girder carrying Mitchell RD/636 over Smith River in Henry County, Virginia. It was built in 1998, so it is 27 years old, younger than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 193 vehicles a day, roughly 2% of them trucks, projected to reach 266 by 2042. The structure is 352 ft (107.4 m) long and 28 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesMitchell RD/636
CrossesSmith River
Location0.90-RT 697; 1.00-RT 632
RouteCounty Highway 636
Coordinates36.60168, -79.77637
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating44 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length352 ft (107.4 m)
Longest span86 ft (26.1 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic193 (2022)
Projected traffic266 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$171.6 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mitchell RD/636 over Smith River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Mitchell RD/636 over Smith River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does Mitchell RD/636 over Smith River carry?

About 193 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Mitchell RD/636 over Smith River?

The structure is 352 ft (107.4 m) long with a longest span of 86 ft (26.1 m) and a deck 28 ft wide.

Who owns Mitchell RD/636 over Smith River?

It is owned by the State Highway Agency.