US Bridges

Watkins Mill Road over Is 270 (wash. Natl Pike

Good

Montgomery County, Maryland · 0.75 Mi. N of Md 124 · Structure no. 100000150200010

Built
2020
5 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
608 ft
5 main spans
Daily traffic
—
2016 count
Owner
State
State Highway Agency

About this bridge

Watkins Mill Road over Is 270 (wash. Natl Pike is a steel continuous stringer/multi-beam or girder carrying Watkins Mill Road over Is 270 (wash. Natl Pike in Montgomery County, Maryland. It was built in 2020, so it is 5 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.

No traffic count is recorded. The structure is 608 ft (185.2 m) long and 150 ft wide.

Location

No coordinates are recorded for this structure.

CarriesWatkins Mill Road
CrossesIs 270 (wash. Natl Pike
Location0.75 Mi. N of Md 124
RouteCounty Highway 0
CountyMontgomery County
StateMaryland
Functional classRural Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length608 ft (185.2 m)
Longest span140 ft (42.7 m)
Deck width150 ft (45.6 m)
Roadway width91 ft (27.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic46,000 by 2036
Trucks4%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Is 270 (wash. Natl Pike built?

It was built in 2020, making it 5 years old in 2025.

What condition is Watkins Mill Road over Is 270 (wash. Natl Pike 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 September 2024.

How much traffic does Watkins Mill Road over Is 270 (wash. Natl Pike carry?

No traffic count is recorded for this structure.

How long is Watkins Mill Road over Is 270 (wash. Natl Pike?

The structure is 608 ft (185.2 m) long with a longest span of 140 ft (42.7 m) and a deck 150 ft wide.

Who owns Watkins Mill Road over Is 270 (wash. Natl Pike?

It is owned by the State Highway Agency.