US Bridges

Greentree Road over Bulls Run

Poor

Montgomery County, Maryland · 0.5 Miles East of Md 191 · Structure no. 200000M-0180020

Built
1949
76 years old
Condition
Poor
inspected March 2023
Type
Culvert
Concrete
Length
25 ft
Daily traffic
10,816
2023 count
Owner
County
County Highway Agency

About this bridge

Greentree Road over Bulls Run is a concrete culvert carrying Greentree Road over Bulls Run in Montgomery County, Maryland. It was built in 1949, so it is 76 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 4 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.

It carries about 10,816 vehicles a day, roughly 5% of them trucks, projected to reach 13,624 by 2043. The structure is 25 ft (7.6 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesGreentree Road
CrossesBulls Run
Location0.5 Miles East of Md 191
RouteCounty Highway 167
CountyMontgomery County
StateMaryland
Coordinates39.0022, -77.12908
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadH 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width38 ft (11.6 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,816 (2023)
Projected traffic13,624 by 2043
Trucks5%
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 proposedNone recorded
Estimated improvement cost$630 million (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Greentree Road over Bulls Run built?

It was built in 1949, making it 76 years old in 2025.

What condition is Greentree Road over Bulls Run 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 March 2023.

How much traffic does Greentree Road over Bulls Run carry?

About 10,816 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Greentree Road over Bulls Run?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 38 ft wide.

Who owns Greentree Road over Bulls Run?

It is owned by the County Highway Agency.