US Bridges

Park Road N.W. over Rock Creek

Fair

District of Columbia, District of Columbia · Pierce Mill & Rock CR · Structure no. 0020

Built
1900
125 years old, rebuilt 1993
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
135 ft
2 main spans
Daily traffic
4,000
2018 count
Owner
State
State Highway Agency

About this bridge

Park Road N.W. over Rock Creek is a steel stringer/multi-beam or girder carrying Park Road N.W. over Rock Creek in District of Columbia, District of Columbia. It was built in 1900 and reconstructed in 1993, so it is 125 years old, older than the District of Columbia average of 63.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 4,000 vehicles a day, roughly 1% of them trucks, projected to reach 12,500 by 2027. The structure is 135 ft (41.2 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesPark Road N.W.
CrossesRock Creek
LocationPierce Mill & Rock CR
RouteCity Street 0
CountyDistrict of Columbia
StateDistrict of Columbia
Coordinates38.93974, -77.05148
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length135 ft (41.2 m)
Longest span70 ft (21.3 m)
Deck width30 ft (9 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2018)
Projected traffic12,500 by 2027
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Park Road N.W. over Rock Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1993.

What condition is Park Road N.W. 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 June 2024.

How much traffic does Park Road N.W. over Rock Creek carry?

About 4,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Park Road N.W. over Rock Creek?

The structure is 135 ft (41.2 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.

Who owns Park Road N.W. over Rock Creek?

It is owned by the State Highway Agency.