US Bridges

Jones Mill Road over Coquelin Run

Fair

Montgomery County, Maryland · 0.5 Miles North of Md 410 · Structure no. 200000M-0165030

Built
1949
76 years old, rebuilt 2000
Condition
Fair
inspected February 2025
Type
Culvert
Steel
Length
37 ft
2 main spans
Daily traffic
7,307
2025 count
Owner
County
County Highway Agency

About this bridge

Jones Mill Road over Coquelin Run is a steel culvert carrying Jones Mill Road over Coquelin Run in Montgomery County, Maryland. It was built in 1949 and reconstructed in 2000, 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 fair condition with a lowest component rating of 5 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 7,307 vehicles a day, roughly 1% of them trucks, projected to reach 8,540 by 2045. The structure is 37 ft (11.2 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesJones Mill Road
CrossesCoquelin Run
Location0.5 Miles North of Md 410
RouteCounty Highway 4460
CountyMontgomery County
StateMaryland
Coordinates38.9953, -77.06576
Functional classUrban Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length37 ft (11.2 m)
Longest span13 ft (4 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,307 (2025)
Projected traffic8,540 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Jones Mill Road over Coquelin Run built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2000.

What condition is Jones Mill Road over Coquelin Run 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 February 2025.

How much traffic does Jones Mill Road over Coquelin Run carry?

About 7,307 vehicles per day (2025 count), of which roughly 1% are trucks.

How long is Jones Mill Road over Coquelin Run?

The structure is 37 ft (11.2 m) long with a longest span of 13 ft (4 m) and a deck 43 ft wide.

Who owns Jones Mill Road over Coquelin Run?

It is owned by the County Highway Agency.