US Bridges

Northern Parkway over Herring Run

Fair

Baltimore city, Maryland · 0.6 MI E of Loch Raven Bd · Structure no. 200000BC3255020

Built
1964
61 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
39 ft
Daily traffic
24,655
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Northern Parkway over Herring Run is a concrete culvert carrying Northern Parkway over Herring Run in Baltimore city, Maryland. It was built in 1964, so it is 61 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 24,655 vehicles a day, roughly 5% of them trucks, projected to reach 30,085 by 2035. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNorthern Parkway
CrossesHerring Run
Location0.6 MI E of Loch Raven Bd
RouteCity Street 1022
Coordinates39.36717, -76.58001
Functional classUrban 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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,655 (2015)
Projected traffic30,085 by 2035
Trucks5%
Lanes on structure6
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$37,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Northern Parkway over Herring Run built?

It was built in 1964, making it 61 years old in 2025.

What condition is Northern Parkway over Herring 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 Northern Parkway over Herring Run carry?

About 24,655 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Northern Parkway over Herring Run?

The structure is 39 ft (11.9 m) long with a longest span of 8 ft (2.4 m).

Who owns Northern Parkway over Herring Run?

It is owned by the City or Municipal Highway Agency.