US Bridges

Monkton Road over Gunpowder Falls

Fair

Baltimore County, Maryland · 0.6 MI E of Piney Hill RD · Structure no. 200000B-0014010

Built
1975
50 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
210 ft
3 main spans
Daily traffic
3,850
2017 count
Owner
County
County Highway Agency

About this bridge

Monkton Road over Gunpowder Falls is a steel continuous stringer/multi-beam or girder carrying Monkton Road over Gunpowder Falls in Baltimore County, Maryland. It was built in 1975, so it is 50 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 5 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 3,850 vehicles a day, roughly 5% of them trucks, projected to reach 4,697 by 2037. The structure is 210 ft (64 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMonkton Road
CrossesGunpowder Falls
Location0.6 MI E of Piney Hill RD
RouteCounty Highway 224
CountyBaltimore County
StateMaryland
Coordinates39.57861, -76.61823
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length210 ft (64 m)
Longest span88 ft (26.8 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,850 (2017)
Projected traffic4,697 by 2037
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Monkton Road over Gunpowder Falls built?

It was built in 1975, making it 50 years old in 2025.

What condition is Monkton Road over Gunpowder Falls 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 June 2023.

How much traffic does Monkton Road over Gunpowder Falls carry?

About 3,850 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Monkton Road over Gunpowder Falls?

The structure is 210 ft (64 m) long with a longest span of 88 ft (26.8 m) and a deck 43 ft wide.

Who owns Monkton Road over Gunpowder Falls?

It is owned by the County Highway Agency.