US Bridges

Watkins Mill Road over CSX Railroad

Good

Montgomery County, Maryland · .28 Miles North of Md 117 · Structure no. 200000M-0371010

Built
2006
19 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
89 ft
1 main span
Daily traffic
2,136
2022 count
Owner
County
County Highway Agency

About this bridge

Watkins Mill Road over CSX Railroad is a steel stringer/multi-beam or girder carrying Watkins Mill Road over CSX Railroad in Montgomery County, Maryland. It was built in 2006, so it is 19 years old, younger than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,136 vehicles a day, roughly 5% of them trucks, projected to reach 2,777 by 2042. The structure is 89 ft (27 m) long and 90 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesWatkins Mill Road
CrossesCSX Railroad
Location.28 Miles North of Md 117
RouteCounty Highway 3770
Coordinates39.15149, -77.23166
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.5 US tons
Inventory rating56 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length89 ft (27 m)
Longest span84 ft (25.6 m)
Deck width90 ft (27.5 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,136 (2022)
Projected traffic2,777 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Watkins Mill Road over CSX Railroad built?

It was built in 2006, making it 19 years old in 2025.

What condition is Watkins Mill Road over CSX Railroad in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does Watkins Mill Road over CSX Railroad carry?

About 2,136 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Watkins Mill Road over CSX Railroad?

The structure is 89 ft (27 m) long with a longest span of 84 ft (25.6 m) and a deck 90 ft wide.

Who owns Watkins Mill Road over CSX Railroad?

It is owned by the County Highway Agency.