US Bridges

Monumental Millsrd over Duncan Run

FairPosted for load

Culpeper County, Virginia · .50FROM 229 & 2.00 to 628 · Structure no. 000000000005652

Built
1940
85 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
1,077
2022 count
Owner
State
State Highway Agency

About this bridge

Monumental Millsrd over Duncan Run is a concrete slab carrying Monumental Millsrd over Duncan Run in Culpeper County, Virginia. It was built in 1940, so it is 85 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 1,077 vehicles a day, projected to reach 1,148 by 2042. The structure is 23 ft (6.9 m) long and 22 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesMonumental Millsrd
CrossesDuncan Run
Location.50FROM 229 & 2.00 to 628
RouteCounty Highway 640
CountyCulpeper County
StateVirginia
Coordinates38.58225, -77.98745
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span23 ft (6.9 m)
Deck width22 ft (6.7 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,077 (2022)
Projected traffic1,148 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$50 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Monumental Millsrd over Duncan Run built?

It was built in 1940, making it 85 years old in 2025.

What condition is Monumental Millsrd over Duncan 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 September 2024.

How much traffic does Monumental Millsrd over Duncan Run carry?

About 1,077 vehicles per day (2022 count).

How long is Monumental Millsrd over Duncan Run?

The structure is 23 ft (6.9 m) long with a longest span of 23 ft (6.9 m) and a deck 22 ft wide.

Who owns Monumental Millsrd over Duncan Run?

It is owned by the State Highway Agency.