US Bridges

Is 370 Ramp F over Is 370

Good

Montgomery County, Maryland · 0.16 MI E of Is 270 · Structure no. 100000150156010

Built
1989
36 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
306 ft
2 main spans
Daily traffic
14,302
2006 count
Owner
State
State Highway Agency

About this bridge

Is 370 Ramp F over Is 370 is a steel continuous stringer/multi-beam or girder carrying Is 370 Ramp F over Is 370 in Montgomery County, Maryland. It was built in 1989, so it is 36 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 14,302 vehicles a day, roughly 8% of them trucks, projected to reach 15,446 by 2026. The structure is 306 ft (93.3 m) long and 47 ft wide.

Location

Open in Google Maps
CarriesIs 370 Ramp F
CrossesIs 370
Location0.16 MI E of Is 270
RouteInterstate 370
CountyMontgomery County
StateMaryland
Coordinates39.12203, -77.19539
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating58.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length306 ft (93.3 m)
Longest span165 ft (50.3 m)
Deck width47 ft (14.4 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,302 (2006)
Projected traffic15,446 by 2026
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 Is 370 Ramp F over Is 370 built?

It was built in 1989, making it 36 years old in 2025.

What condition is Is 370 Ramp F over Is 370 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 December 2023.

How much traffic does Is 370 Ramp F over Is 370 carry?

About 14,302 vehicles per day (2006 count), of which roughly 8% are trucks.

How long is Is 370 Ramp F over Is 370?

The structure is 306 ft (93.3 m) long with a longest span of 165 ft (50.3 m) and a deck 47 ft wide.

Who owns Is 370 Ramp F over Is 370?

It is owned by the State Highway Agency.