US Bridges

Is 270 NB over Baker Valley RD

Fair

Frederick County, Maryland · 2.96 Miles North of Md 80 · Structure no. 100000100076011

Built
1950
75 years old, rebuilt 1975
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
59 ft
1 main span
Daily traffic
80,340
2009 count
Owner
State
State Highway Agency

About this bridge

Is 270 NB over Baker Valley RD is a steel stringer/multi-beam or girder carrying Is 270 NB over Baker Valley RD in Frederick County, Maryland. It was built in 1950 and reconstructed in 1975, so it is 75 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 80,340 vehicles a day, roughly 8% of them trucks, projected to reach 110,800 by 2029. The structure is 59 ft (18 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIs 270 NB
CrossesBaker Valley RD
Location2.96 Miles North of Md 80
RouteInterstate 270
CountyFrederick County
StateMaryland
Coordinates39.35324, -77.39349
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length59 ft (18 m)
Longest span55 ft (16.8 m)
Deck width43 ft (13.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80,340 (2009)
Projected traffic110,800 by 2029
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$167,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 270 NB over Baker Valley RD built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1975.

What condition is Is 270 NB over Baker Valley RD 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 July 2024.

How much traffic does Is 270 NB over Baker Valley RD carry?

About 80,340 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Is 270 NB over Baker Valley RD?

The structure is 59 ft (18 m) long with a longest span of 55 ft (16.8 m) and a deck 43 ft wide.

Who owns Is 270 NB over Baker Valley RD?

It is owned by the State Highway Agency.