US Bridges

Glen Arm Road over Gunpowder Falls

Good

Baltimore County, Maryland · 0.02 MI E of Md 567 · Structure no. 200000B-0075010

Built
1998
27 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
248 ft
3 main spans
Daily traffic
14,402
2021 count
Owner
County
County Highway Agency

About this bridge

Glen Arm Road over Gunpowder Falls is a steel continuous stringer/multi-beam or girder carrying Glen Arm Road over Gunpowder Falls in Baltimore County, Maryland. It was built in 1998, so it is 27 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 14,402 vehicles a day, roughly 5% of them trucks, projected to reach 17,572 by 2041. The structure is 248 ft (75.6 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesGlen Arm Road
CrossesGunpowder Falls
Location0.02 MI E of Md 567
RouteCounty Highway 3887
CountyBaltimore County
StateMaryland
Coordinates39.42536, -76.52906
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating73 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length248 ft (75.6 m)
Longest span90 ft (27.4 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,402 (2021)
Projected traffic17,572 by 2041
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 Glen Arm Road over Gunpowder Falls built?

It was built in 1998, making it 27 years old in 2025.

What condition is Glen Arm Road over Gunpowder Falls 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 October 2023.

How much traffic does Glen Arm Road over Gunpowder Falls carry?

About 14,402 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Glen Arm Road over Gunpowder Falls?

The structure is 248 ft (75.6 m) long with a longest span of 90 ft (27.4 m) and a deck 38 ft wide.

Who owns Glen Arm Road over Gunpowder Falls?

It is owned by the County Highway Agency.