US Bridges

Trenthill DR/666 over Smith River

Fair

Henry County, Virginia · 0.00 Rt 57; 0.02 Rt 962 · Structure no. 000000000010144

Built
1966
59 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
168 ft
3 main spans
Daily traffic
606
2022 count
Owner
State
State Highway Agency

About this bridge

Trenthill DR/666 over Smith River is a prestressed concrete stringer/multi-beam or girder carrying Trenthill DR/666 over Smith River in Henry County, Virginia. It was built in 1966, so it is 59 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 606 vehicles a day, roughly 1% of them trucks, projected to reach 676 by 2045. The structure is 168 ft (51.2 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesTrenthill DR/666
CrossesSmith River
Location0.00 Rt 57; 0.02 Rt 962
RouteCounty Highway 666
CountyHenry County
StateVirginia
Coordinates36.76662, -80.00095
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating73 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length168 ft (51.2 m)
Longest span56 ft (17.1 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic606 (2022)
Projected traffic676 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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$860 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Trenthill DR/666 over Smith River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Trenthill DR/666 over Smith 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 July 2023.

How much traffic does Trenthill DR/666 over Smith River carry?

About 606 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Trenthill DR/666 over Smith River?

The structure is 168 ft (51.2 m) long with a longest span of 56 ft (17.1 m) and a deck 36 ft wide.

Who owns Trenthill DR/666 over Smith River?

It is owned by the State Highway Agency.