US Bridges

Rudasill Mill Road over Thornton River

Good

Rappahannock County, Virginia · 2.70 FR 522 & .60 to 620 · Structure no. 000000000014704

Built
1971
54 years old, rebuilt 2007
Condition
Good
inspected May 2023
Type
Slab
Prestressed Concrete
Length
122 ft
3 main spans
Daily traffic
205
2019 count
Owner
State
State Highway Agency

About this bridge

Rudasill Mill Road over Thornton River is a prestressed concrete slab carrying Rudasill Mill Road over Thornton River in Rappahannock County, Virginia. It was built in 1971 and reconstructed in 2007, so it is 54 years old, older 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 205 vehicles a day, projected to reach 312 by 2045. The structure is 122 ft (37.2 m) long and 25 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesRudasill Mill Road
CrossesThornton River
Location2.70 FR 522 & .60 to 620
RouteCounty Highway 621
Coordinates38.64263, -78.17035
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span41 ft (12.5 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic205 (2019)
Projected traffic312 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Rudasill Mill Road over Thornton River built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2007.

What condition is Rudasill Mill Road over Thornton 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 2023.

How much traffic does Rudasill Mill Road over Thornton River carry?

About 205 vehicles per day (2019 count).

How long is Rudasill Mill Road over Thornton River?

The structure is 122 ft (37.2 m) long with a longest span of 41 ft (12.5 m) and a deck 25 ft wide.

Who owns Rudasill Mill Road over Thornton River?

It is owned by the State Highway Agency.