US Bridges

Seneca Hollow RD over Sf Roanoke River

Good

Montgomery County, Virginia · 0.40-RT 11;2.10-I81 · Structure no. 000000000029551

Built
2022
3 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete
Length
129 ft
3 main spans
Daily traffic
430
2020 count
Owner
State
State Highway Agency

About this bridge

Seneca Hollow RD over Sf Roanoke River is a concrete slab carrying Seneca Hollow RD over Sf Roanoke River in Montgomery County, Virginia. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 430 vehicles a day, roughly 3% of them trucks, projected to reach 484 by 2042. The structure is 129 ft (39.4 m) long and 19 ft wide.

Location

Open in Google Maps
CarriesSeneca Hollow RD
CrossesSf Roanoke River
Location0.40-RT 11;2.10-I81
RouteCounty Highway 636
CountyMontgomery County
StateVirginia
Coordinates37.20006, -80.23972
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating80 US tons
Inventory rating61.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckOther
Main spans3
Design loadHL 93
Structure length129 ft (39.4 m)
Longest span45 ft (13.6 m)
Deck width19 ft (5.8 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic430 (2020)
Projected traffic484 by 2042
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Seneca Hollow RD over Sf Roanoke River built?

It was built in 2022, making it 3 years old in 2025.

What condition is Seneca Hollow RD over Sf Roanoke 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 February 2024.

How much traffic does Seneca Hollow RD over Sf Roanoke River carry?

About 430 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Seneca Hollow RD over Sf Roanoke River?

The structure is 129 ft (39.4 m) long with a longest span of 45 ft (13.6 m) and a deck 19 ft wide.

Who owns Seneca Hollow RD over Sf Roanoke River?

It is owned by the State Highway Agency.