US Bridges

Randolph Road over Northwest Branch

FairPosted for load

Montgomery County, Maryland · 0.1 MI E of Kemp Mill RD · Structure no. 200000M-0204020

Built
1976
49 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
75 ft
Daily traffic
60,342
2019 count
Owner
County
County Highway Agency

About this bridge

Randolph Road over Northwest Branch is a concrete culvert carrying Randolph Road over Northwest Branch in Montgomery County, Maryland. It was built in 1976, so it is 49 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 60,342 vehicles a day, roughly 10% of them trucks, projected to reach 71,189 by 2039. The structure is 75 ft (22.9 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesRandolph Road
CrossesNorthwest Branch
Location0.1 MI E of Kemp Mill RD
RouteCounty Highway 1659
CountyMontgomery County
StateMaryland
Coordinates39.06629, -77.02958
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadUnknown
Structure length75 ft (22.9 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60,342 (2019)
Projected traffic71,189 by 2039
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Randolph Road over Northwest Branch built?

It was built in 1976, making it 49 years old in 2025.

What condition is Randolph Road over Northwest Branch 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 March 2023.

How much traffic does Randolph Road over Northwest Branch carry?

About 60,342 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Randolph Road over Northwest Branch?

The structure is 75 ft (22.9 m) long with a longest span of 18 ft (5.5 m).

Who owns Randolph Road over Northwest Branch?

It is owned by the County Highway Agency.