US Bridges

Garrett Park Road over Rock Creek

PoorPosted for load

Montgomery County, Maryland · 100 Ft W of Beach Drive · Structure no. 200000M-PK04010

Built
1965
60 years old, rebuilt 2000
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
154 ft
3 main spans
Daily traffic
3,554
2022 count
Owner
County
County Highway Agency

About this bridge

Garrett Park Road over Rock Creek is a steel stringer/multi-beam or girder carrying Garrett Park Road over Rock Creek in Montgomery County, Maryland. It was built in 1965 and reconstructed in 2000, so it is 60 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 3,554 vehicles a day, projected to reach 4,051 by 2042. The structure is 154 ft (46.9 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesGarrett Park Road
CrossesRock Creek
Location100 Ft W of Beach Drive
Coordinates39.0409, -77.08947
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25.5 US tons
Inventory rating15 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length154 ft (46.9 m)
Longest span76 ft (23.2 m)
Deck width33 ft (10.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,554 (2022)
Projected traffic4,051 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Garrett Park Road over Rock Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2000.

What condition is Garrett Park Road over Rock Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Garrett Park Road over Rock Creek carry?

About 3,554 vehicles per day (2022 count).

How long is Garrett Park Road over Rock Creek?

The structure is 154 ft (46.9 m) long with a longest span of 76 ft (23.2 m) and a deck 33 ft wide.

Who owns Garrett Park Road over Rock Creek?

It is owned by the County Highway Agency.