Is 70 Ramp a & E over US 15/US 340

Fair

Frederick County, Maryland · 0.37 Mile East of Md 180 · Structure no. 100000100143010

Built: 1968; 57 years old, rebuilt 1998
Condition: Fair; inspected May 2024
Type: Stringer/Multi-beam or Girder; Steel Continuous
Length: 183 ft; 2 main spans
Daily traffic: 13,542; 2016 count
Owner: State; State Highway Agency

About this bridge

Is 70 Ramp a & E over US 15/US 340 is a steel continuous stringer/multi-beam or girder carrying Is 70 Ramp a & E over US 15/US 340 in Frederick County, Maryland. It was built in 1968 and reconstructed in 1998, so it is 57 years old, older 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 5 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 13,542 vehicles a day, roughly 8% of them trucks, projected to reach 17,361 by 2036. The structure is 183 ft (55.8 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

No coordinates are recorded for this structure.

CarriesIs 70 Ramp a & E

CrossesUS 15/US 340

Location0.37 Mile East of Md 180

RouteInterstate 70

CountyFrederick County

StateMaryland

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.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionMay 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourBridge not over waterway

Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is

Deck geometry9: Superior to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating55.4 US tons

Inventory rating32.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder

MaterialSteel Continuous

DeckConcrete, cast-in-place

Main spans2

Design loadHS 20

Structure length183 ft (55.8 m)

Longest span93 ft (28.3 m)

Deck width45 ft (13.7 m)

Roadway width41 ft (12.4 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,542 (2016)

Projected traffic17,361 by 2036

Trucks8%

Lanes on structure2

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 Is 70 Ramp a & E over US 15/US 340 built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1998.

What condition is Is 70 Ramp a & E over US 15/US 340 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 May 2024.

How much traffic does Is 70 Ramp a & E over US 15/US 340 carry?

About 13,542 vehicles per day (2016 count), of which roughly 8% are trucks.

How long is Is 70 Ramp a & E over US 15/US 340?

The structure is 183 ft (55.8 m) long with a longest span of 93 ft (28.3 m) and a deck 45 ft wide.

Who owns Is 70 Ramp a & E over US 15/US 340?

It is owned by the State Highway Agency.