US Bridges

Saint Charles Pkwy over Kerrick Swamp

Good

Charles County, Maryland · 2.1 MI S of Billingsley · Structure no. 200000CH0026010

Built
2008
17 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
1,269
2023 count
Owner
County
County Highway Agency

About this bridge

Saint Charles Pkwy over Kerrick Swamp is a prestressed concrete stringer/multi-beam or girder carrying Saint Charles Pkwy over Kerrick Swamp in Charles County, Maryland. It was built in 2008, so it is 17 years old, younger than the Maryland average of 52.6 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 1,269 vehicles a day, roughly 5% of them trucks, projected to reach 1,971 by 2043. The structure is 90 ft (27.4 m) long and 92 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSaint Charles Pkwy
CrossesKerrick Swamp
Location2.1 MI S of Billingsley
RouteCounty Highway 623
Coordinates38.56024, -76.93343
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating49.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length90 ft (27.4 m)
Longest span88 ft (26.8 m)
Deck width92 ft (28 m)
Roadway width73 ft (22.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,269 (2023)
Projected traffic1,971 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Saint Charles Pkwy over Kerrick Swamp built?

It was built in 2008, making it 17 years old in 2025.

What condition is Saint Charles Pkwy over Kerrick 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 August 2023.

How much traffic does Saint Charles Pkwy over Kerrick Swamp carry?

About 1,269 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Saint Charles Pkwy over Kerrick Swamp?

The structure is 90 ft (27.4 m) long with a longest span of 88 ft (26.8 m) and a deck 92 ft wide.

Who owns Saint Charles Pkwy over Kerrick Swamp?

It is owned by the County Highway Agency.