US Bridges

Frog Level Road over Boot Swamp

Good

Caroline County, Virginia · King Wm.-Caroline Co.Line · Structure no. 000000000028809

Built
2013
12 years old
Condition
Good
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
576
2022 count
Owner
State
State Highway Agency

About this bridge

Frog Level Road over Boot Swamp is a prestressed concrete box beam or girders - multiple carrying Frog Level Road over Boot Swamp in Caroline County, Virginia. It was built in 2013, so it is 12 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 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 576 vehicles a day, roughly 2% of them trucks, projected to reach 841 by 2042. The structure is 50 ft (15.2 m) long and 36 ft wide.

Location

Open in Google Maps
CarriesFrog Level Road
CrossesBoot Swamp
LocationKing Wm.-Caroline Co.Line
RouteCounty Highway 600
CountyCaroline County
StateVirginia
Coordinates37.87752, -77.24812
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating55.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width36 ft (11.1 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic576 (2022)
Projected traffic841 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Frog Level Road over Boot Swamp built?

It was built in 2013, making it 12 years old in 2025.

What condition is Frog Level Road over Boot Swamp 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 Frog Level Road over Boot Swamp carry?

About 576 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Frog Level Road over Boot Swamp?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 36 ft wide.

Who owns Frog Level Road over Boot Swamp?

It is owned by the State Highway Agency.