US Bridges

Mechanicsville RD over Chaptico Creek

Good

St. Mary's County, Maryland · 0.7 MI N of Md RTE 234 · Structure no. 200000SM0137020

Built
2011
14 years old
Condition
Good
inspected September 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
101 ft
3 main spans
Daily traffic
2,876
2009 count
Owner
County
County Highway Agency

About this bridge

Mechanicsville RD over Chaptico Creek is a aluminum, wrought iron, or cast iron culvert carrying Mechanicsville RD over Chaptico Creek in St. Mary's County, Maryland. It was built in 2011, so it is 14 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 2,876 vehicles a day, roughly 3% of them trucks, projected to reach 4,026 by 2029. The structure is 101 ft (30.8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMechanicsville RD
CrossesChaptico Creek
Location0.7 MI N of Md RTE 234
RouteCounty Highway 29
Coordinates38.38, -76.78167
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating48.9 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans3
Design loadHS 20
Structure length101 ft (30.8 m)
Longest span34 ft (10.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck10 ft (3 m)

Traffic and service

Average daily traffic2,876 (2009)
Projected traffic4,026 by 2029
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Mechanicsville RD over Chaptico Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Mechanicsville RD over Chaptico Creek 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 September 2023.

How much traffic does Mechanicsville RD over Chaptico Creek carry?

About 2,876 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is Mechanicsville RD over Chaptico Creek?

The structure is 101 ft (30.8 m) long with a longest span of 34 ft (10.4 m).

Who owns Mechanicsville RD over Chaptico Creek?

It is owned by the County Highway Agency.