US Bridges

Bryantown Road over Mill Dam Run

Poor

Charles County, Maryland · 0.66 MI N of Md 5 · Structure no. 200000CH0033010

Built
1933
92 years old
Condition
Poor
inspected September 2024
Type
Tee Beam
Concrete
Length
36 ft
1 main span
Daily traffic
1,497
2023 count
Owner
County
County Highway Agency

About this bridge

Bryantown Road over Mill Dam Run is a concrete tee beam carrying Bryantown Road over Mill Dam Run in Charles County, Maryland. It was built in 1933, so it is 92 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,497 vehicles a day, roughly 8% of them trucks, projected to reach 1,827 by 2043. The structure is 36 ft (11 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesBryantown Road
CrossesMill Dam Run
Location0.66 MI N of Md 5
RouteState Highway 232
CountyCharles County
StateMaryland
Coordinates38.56478, -76.84022
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating57 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length36 ft (11 m)
Longest span32 ft (9.8 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,497 (2023)
Projected traffic1,827 by 2043
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$150,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Bryantown Road over Mill Dam Run built?

It was built in 1933, making it 92 years old in 2025.

What condition is Bryantown Road over Mill Dam Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Bryantown Road over Mill Dam Run carry?

About 1,497 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Bryantown Road over Mill Dam Run?

The structure is 36 ft (11 m) long with a longest span of 32 ft (9.8 m) and a deck 31 ft wide.

Who owns Bryantown Road over Mill Dam Run?

It is owned by the County Highway Agency.