US Bridges

Randolph Road (wb) over Rock Creek

Fair

Montgomery County, Maryland · 0.6 Miles West of Md 586 · Structure no. 200000M-0080014

Built
1951
74 years old, rebuilt 1993
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
82 ft
2 main spans
Daily traffic
23,434
2022 count
Owner
County
County Highway Agency

About this bridge

Randolph Road (wb) over Rock Creek is a steel stringer/multi-beam or girder carrying Randolph Road (wb) over Rock Creek in Montgomery County, Maryland. It was built in 1951 and reconstructed in 1993, so it is 74 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 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 23,434 vehicles a day, roughly 2% of them trucks, projected to reach 29,170 by 2044. The structure is 82 ft (25 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesRandolph Road (wb)
CrossesRock Creek
Location0.6 Miles West of Md 586
RouteCounty Highway 1659
CountyMontgomery County
StateMaryland
Coordinates39.05363, -77.09124
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating73 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length82 ft (25 m)
Longest span40 ft (12.2 m)
Deck width37 ft (11.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,434 (2022)
Projected traffic29,170 by 2044
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$22,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Randolph Road (wb) over Rock Creek built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1993.

What condition is Randolph Road (wb) 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 July 2023.

How much traffic does Randolph Road (wb) over Rock Creek carry?

About 23,434 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Randolph Road (wb) over Rock Creek?

The structure is 82 ft (25 m) long with a longest span of 40 ft (12.2 m) and a deck 37 ft wide.

Who owns Randolph Road (wb) over Rock Creek?

It is owned by the County Highway Agency.