US Bridges

Md 6 over Nanjemoy Creek

Fair

Charles County, Maryland · 1.4 Miles West of Md 425 · Structure no. 100000080015010

Built
1922
103 years old, rebuilt 2010
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
68 ft
3 main spans
Daily traffic
1,972
2009 count
Owner
State
State Highway Agency

About this bridge

Md 6 over Nanjemoy Creek is a concrete slab carrying Md 6 over Nanjemoy Creek in Charles County, Maryland. It was built in 1922 and reconstructed in 2010, so it is 103 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 1,972 vehicles a day, roughly 8% of them trucks, projected to reach 2,573 by 2026. The structure is 68 ft (20.7 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesMd 6
CrossesNanjemoy Creek
Location1.4 Miles West of Md 425
RouteState Highway 6
CountyCharles County
StateMaryland
Coordinates38.42058, -77.19761
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to 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 alignment6: Equal to present minimum criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length68 ft (20.7 m)
Longest span24 ft (7.3 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,972 (2009)
Projected traffic2,573 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$227,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 6 over Nanjemoy Creek built?

It was built in 1922, making it 103 years old in 2025. It was reconstructed in 2010.

What condition is Md 6 over Nanjemoy Creek 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 November 2024.

How much traffic does Md 6 over Nanjemoy Creek carry?

About 1,972 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 6 over Nanjemoy Creek?

The structure is 68 ft (20.7 m) long with a longest span of 24 ft (7.3 m) and a deck 25 ft wide.

Who owns Md 6 over Nanjemoy Creek?

It is owned by the State Highway Agency.