US Bridges

Marriottsville Roa over Falls Run

Fair

Baltimore County, Maryland · 0.28 MI W of W Chapel RD · Structure no. 200000B-0215020

Built
1984
41 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
37 ft
Daily traffic
4,050
2023 count
Owner
County
County Highway Agency

About this bridge

Marriottsville Roa over Falls Run is a concrete culvert carrying Marriottsville Roa over Falls Run in Baltimore County, Maryland. It was built in 1984, so it is 41 years old, younger 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 4,050 vehicles a day, roughly 80% of them trucks, projected to reach 6,670 by 2043. The structure is 37 ft (11.3 m) long and 43 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesMarriottsville Roa
CrossesFalls Run
Location0.28 MI W of W Chapel RD
RouteCounty Highway 533
CountyBaltimore County
StateMaryland
Coordinates39.3677, -76.8714
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans0
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span12 ft (3.7 m)
Deck width43 ft (13.1 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,050 (2023)
Projected traffic6,670 by 2043
Trucks80%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Marriottsville Roa over Falls Run built?

It was built in 1984, making it 41 years old in 2025.

What condition is Marriottsville Roa over Falls 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 May 2023.

How much traffic does Marriottsville Roa over Falls Run carry?

About 4,050 vehicles per day (2023 count), of which roughly 80% are trucks.

How long is Marriottsville Roa over Falls Run?

The structure is 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m) and a deck 43 ft wide.

Who owns Marriottsville Roa over Falls Run?

It is owned by the County Highway Agency.