US Bridges

Is 370 Ramp F(1) over Is 270 C-D Rds & Rp C/5

Fair

Montgomery County, Maryland · At I-370 · Structure no. 100000150160010

Built
1989
36 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
299 ft
2 main spans
Daily traffic
13,596
2006 count
Owner
State
State Highway Agency

About this bridge

Is 370 Ramp F(1) over Is 270 C-D Rds & Rp C/5 is a steel continuous stringer/multi-beam or girder carrying Is 370 Ramp F(1) over Is 270 C-D Rds & Rp C/5 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 fair condition with a lowest component rating of 6 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 13,596 vehicles a day, roughly 8% of them trucks, projected to reach 14,684 by 2026. The structure is 299 ft (91.1 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesIs 370 Ramp F(1)
CrossesIs 270 C-D Rds & Rp C/5
LocationAt I-370
RouteInterstate 370
CountyMontgomery County
StateMaryland
Coordinates39.12206, -77.1994
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating93 US tons
Inventory rating56 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length299 ft (91.1 m)
Longest span148 ft (45.1 m)
Deck width43 ft (13 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,596 (2006)
Projected traffic14,684 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(1) over Is 270 C-D Rds & Rp C/5 built?

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

What condition is Is 370 Ramp F(1) over Is 270 C-D Rds & Rp C/5 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 June 2024.

How much traffic does Is 370 Ramp F(1) over Is 270 C-D Rds & Rp C/5 carry?

About 13,596 vehicles per day (2006 count), of which roughly 8% are trucks.

How long is Is 370 Ramp F(1) over Is 270 C-D Rds & Rp C/5?

The structure is 299 ft (91.1 m) long with a longest span of 148 ft (45.1 m) and a deck 43 ft wide.

Who owns Is 370 Ramp F(1) over Is 270 C-D Rds & Rp C/5?

It is owned by the State Highway Agency.