US Bridges

I-370 Wbr over IS-370 RP1 MD200 RP7

Good

Montgomery County, Maryland · 5.67 MI West of MD97 · Structure no. 100000150197014

Built
2010
15 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
118 ft
1 main span
Daily traffic
39,531
2010 count
Owner
State
State Highway Agency

About this bridge

I-370 Wbr over IS-370 RP1 MD200 RP7 is a prestressed concrete stringer/multi-beam or girder carrying I-370 Wbr over IS-370 RP1 MD200 RP7 in Montgomery County, Maryland. It was built in 2010, so it is 15 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 39,531 vehicles a day, roughly 7% of them trucks, projected to reach 58,500 by 2030. The structure is 118 ft (36 m) long and 85 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-370 Wbr
CrossesIS-370 RP1 MD200 RP7
Location5.67 MI West of MD97
RouteState Highway 370
CountyMontgomery County
StateMaryland
Coordinates39.13378, -77.16815
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.5 US tons
Inventory rating56 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length118 ft (36 m)
Longest span115 ft (35.1 m)
Deck width85 ft (26 m)
Roadway width81 ft (24.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,531 (2010)
Projected traffic58,500 by 2030
Trucks7%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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 I-370 Wbr over IS-370 RP1 MD200 RP7 built?

It was built in 2010, making it 15 years old in 2025.

What condition is I-370 Wbr over IS-370 RP1 MD200 RP7 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 August 2023.

How much traffic does I-370 Wbr over IS-370 RP1 MD200 RP7 carry?

About 39,531 vehicles per day (2010 count), of which roughly 7% are trucks.

How long is I-370 Wbr over IS-370 RP1 MD200 RP7?

The structure is 118 ft (36 m) long with a longest span of 115 ft (35.1 m) and a deck 85 ft wide.

Who owns I-370 Wbr over IS-370 RP1 MD200 RP7?

It is owned by the State Highway Agency.