US Bridges

Parklawn Entrance over Rock Creek

FairPosted for load

Montgomery County, Maryland · Md 28 South of Rockville · Structure no. 200000M-PK17010

Built
1950
75 years old, rebuilt 2002
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
27
2023 count
Owner
Local
Local Park, Forest, or Reservation Agency

About this bridge

Parklawn Entrance over Rock Creek is a steel stringer/multi-beam or girder carrying Parklawn Entrance over Rock Creek in Montgomery County, Maryland. It was built in 1950 and reconstructed in 2002, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 27 vehicles a day, projected to reach 32 by 2043. The structure is 40 ft (12.3 m) long and 11 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesParklawn Entrance
CrossesRock Creek
LocationMd 28 South of Rockville
CountyMontgomery County
StateMaryland
Coordinates39.06347, -77.09947
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length40 ft (12.3 m)
Longest span36 ft (11 m)
Deck width11 ft (3.4 m)
Roadway width10 ft (3.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2023)
Projected traffic32 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerLocal Park, Forest, or Reservation Agency
Maintained byLocal Park, Forest, or Reservation Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$75,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Parklawn Entrance over Rock Creek built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2002.

What condition is Parklawn Entrance over Rock Creek 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 2023.

How much traffic does Parklawn Entrance over Rock Creek carry?

About 27 vehicles per day (2023 count).

How long is Parklawn Entrance over Rock Creek?

The structure is 40 ft (12.3 m) long with a longest span of 36 ft (11 m) and a deck 11 ft wide.

Who owns Parklawn Entrance over Rock Creek?

It is owned by the Local Park, Forest, or Reservation Agency.