US Bridges

Dismal Hollow RD over Manassas Run

Fair

Warren County, Virginia · 0.60 to 624 - 0.85 to 603 · Structure no. 000000000018814

Built
1974
51 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
192 ft
3 main spans
Daily traffic
2,504
2021 count
Owner
State
State Highway Agency

About this bridge

Dismal Hollow RD over Manassas Run is a steel continuous stringer/multi-beam or girder carrying Dismal Hollow RD over Manassas Run in Warren County, Virginia. It was built in 1974, so it is 51 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.

It carries about 2,504 vehicles a day, projected to reach 3,565 by 2042. The structure is 192 ft (58.5 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesDismal Hollow RD
CrossesManassas Run
Location0.60 to 624 - 0.85 to 603
RouteCounty Highway 647
CountyWarren County
StateVirginia
Coordinates38.92641, -78.13035
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.8 US tons
Inventory rating66.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length192 ft (58.5 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,504 (2021)
Projected traffic3,565 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Dismal Hollow RD over Manassas Run built?

It was built in 1974, making it 51 years old in 2025.

What condition is Dismal Hollow RD over Manassas Run 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 2024.

How much traffic does Dismal Hollow RD over Manassas Run carry?

About 2,504 vehicles per day (2021 count).

How long is Dismal Hollow RD over Manassas Run?

The structure is 192 ft (58.5 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns Dismal Hollow RD over Manassas Run?

It is owned by the State Highway Agency.