US Bridges

Is 270 NB over Bennett Creek

Fair

Frederick County, Maryland · 1.26 Mi. N. of Md 80 · Structure no. 100000100079011

Built
1950
75 years old, rebuilt 2012
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
79 ft
1 main span
Daily traffic
88,192
2019 count
Owner
State
State Highway Agency

About this bridge

Is 270 NB over Bennett Creek is a steel stringer/multi-beam or girder carrying Is 270 NB over Bennett Creek in Frederick County, Maryland. It was built in 1950 and reconstructed in 2012, 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 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 88,192 vehicles a day, roughly 9% of them trucks, projected to reach 48,623 by 2039. The structure is 79 ft (24.1 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIs 270 NB
CrossesBennett Creek
Location1.26 Mi. N. of Md 80
RouteInterstate 270
CountyFrederick County
StateMaryland
Coordinates39.30829, -77.34538
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable 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
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span75 ft (22.9 m)
Deck width43 ft (13 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88,192 (2019)
Projected traffic48,623 by 2039
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 270 NB over Bennett Creek built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2012.

What condition is Is 270 NB over Bennett Creek 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 February 2023.

How much traffic does Is 270 NB over Bennett Creek carry?

About 88,192 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is Is 270 NB over Bennett Creek?

The structure is 79 ft (24.1 m) long with a longest span of 75 ft (22.9 m) and a deck 43 ft wide.

Who owns Is 270 NB over Bennett Creek?

It is owned by the State Highway Agency.