US Bridges

Cashell Road over Williamsburg Run

Fair

Montgomery County, Maryland · 0.9 MI S of Bowie Mill RD · Structure no. 200000M-0070020

Built
1972
53 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
27 ft
Daily traffic
5,865
2023 count
Owner
County
County Highway Agency

About this bridge

Cashell Road over Williamsburg Run is a concrete culvert carrying Cashell Road over Williamsburg Run in Montgomery County, Maryland. It was built in 1972, so it is 53 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 5,865 vehicles a day, roughly 5% of them trucks, projected to reach 7,100 by 2045. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesCashell Road
CrossesWilliamsburg Run
Location0.9 MI S of Bowie Mill RD
RouteCounty Highway 136
CountyMontgomery County
StateMaryland
Coordinates39.1438, -77.09242
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating85.4 US tons
Inventory rating51 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadHS 20
Structure length27 ft (8.1 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,865 (2023)
Projected traffic7,100 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 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 Cashell Road over Williamsburg Run built?

It was built in 1972, making it 53 years old in 2025.

What condition is Cashell Road over Williamsburg Run 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 October 2024.

How much traffic does Cashell Road over Williamsburg Run carry?

About 5,865 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Cashell Road over Williamsburg Run?

The structure is 27 ft (8.1 m) long with a longest span of 12 ft (3.7 m).

Who owns Cashell Road over Williamsburg Run?

It is owned by the County Highway Agency.