US Bridges

Gwynndale Avenue over Powder Mill Branch

Fair

Baltimore County, Maryland · 0.12 MI N of Md 126 · Structure no. 200000B-0367020

Built
1956
69 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
47 ft
Daily traffic
5,903
2023 count
Owner
County
County Highway Agency

About this bridge

Gwynndale Avenue over Powder Mill Branch is a concrete culvert carrying Gwynndale Avenue over Powder Mill Branch in Baltimore County, Maryland. It was built in 1956, so it is 69 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 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 5,903 vehicles a day, roughly 15% of them trucks, projected to reach 6,509 by 2043. The structure is 47 ft (14.4 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGwynndale Avenue
CrossesPowder Mill Branch
Location0.12 MI N of Md 126
RouteCounty Highway 1922
CountyBaltimore County
StateMaryland
Coordinates39.32624, -76.71426
Functional classUrban Other Principal Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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 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 rating59.5 US tons
Inventory rating35.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans0
Design loadH 20
Structure length47 ft (14.4 m)
Longest span15 ft (4.6 m)
Deck width55 ft (16.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,903 (2023)
Projected traffic6,509 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Gwynndale Avenue over Powder Mill Branch built?

It was built in 1956, making it 69 years old in 2025.

What condition is Gwynndale Avenue over Powder Mill Branch 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 July 2023.

How much traffic does Gwynndale Avenue over Powder Mill Branch carry?

About 5,903 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Gwynndale Avenue over Powder Mill Branch?

The structure is 47 ft (14.4 m) long with a longest span of 15 ft (4.6 m) and a deck 55 ft wide.

Who owns Gwynndale Avenue over Powder Mill Branch?

It is owned by the County Highway Agency.