US Bridges

Is 270 over Tuckerman Lane

Fair

Montgomery County, Maryland · 0.08 Mile N of Is 270Y · Structure no. 100000150081010

Built
1958
67 years old, rebuilt 1989
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
103 ft
3 main spans
Daily traffic
265,320
2009 count
Owner
State
State Highway Agency

About this bridge

Is 270 over Tuckerman Lane is a steel stringer/multi-beam or girder carrying Is 270 over Tuckerman Lane in Montgomery County, Maryland. It was built in 1958 and reconstructed in 1989, so it is 67 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 265,320 vehicles a day, roughly 8% of them trucks, projected to reach 364,620 by 2029. The structure is 103 ft (31.4 m) long and 193 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesIs 270
CrossesTuckerman Lane
Location0.08 Mile N of Is 270Y
RouteInterstate 270
Coordinates39.03781, -77.14534
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 inspectionApril 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 alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating80.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length103 ft (31.4 m)
Longest span46 ft (14 m)
Deck width193 ft (58.9 m)
Roadway width190 ft (57.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265,320 (2009)
Projected traffic364,620 by 2029
Trucks8%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 270 over Tuckerman Lane built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1989.

What condition is Is 270 over Tuckerman Lane 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 April 2024.

How much traffic does Is 270 over Tuckerman Lane carry?

About 265,320 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Is 270 over Tuckerman Lane?

The structure is 103 ft (31.4 m) long with a longest span of 46 ft (14 m) and a deck 193 ft wide.

Who owns Is 270 over Tuckerman Lane?

It is owned by the State Highway Agency.