US Bridges

US 20 Cape ST over Water Greenwater Brook

Fair

Berkshire County, Massachusetts · 0.3 Mi. E. of Maple St. · Structure no. L050240AXDOTNBI

Built
1939
86 years old, rebuilt 1992
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
4,745
2018 count
Owner
State
State Highway Agency

About this bridge

US 20 Cape ST over Water Greenwater Brook is a steel stringer/multi-beam or girder carrying US 20 Cape ST over Water Greenwater Brook in Berkshire County, Massachusetts. It was built in 1939 and reconstructed in 1992, so it is 86 years old, older than the Massachusetts average of 63.8 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 4,745 vehicles a day, roughly 9% of them trucks, projected to reach 6,475 by 2032. The structure is 38 ft (11.6 m) long and 56 ft wide. If it were closed, the detour would be 25.5 mi (41 km).

Location

Open in Google Maps
CarriesUS 20 Cape ST
CrossesWater Greenwater Brook
Location0.3 Mi. E. of Maple St.
RouteU.S. Route 20
CountyBerkshire County
StateMassachusetts
Coordinates42.2997, -73.21468
Functional classRural Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.1 US tons
Inventory rating26.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span35 ft (10.7 m)
Deck width56 ft (17 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,745 (2018)
Projected traffic6,475 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed25.5 mi (41 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 20 Cape ST over Water Greenwater Brook built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1992.

What condition is US 20 Cape ST over Water Greenwater Brook 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 November 2023.

How much traffic does US 20 Cape ST over Water Greenwater Brook carry?

About 4,745 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is US 20 Cape ST over Water Greenwater Brook?

The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.7 m) and a deck 56 ft wide.

Who owns US 20 Cape ST over Water Greenwater Brook?

It is owned by the State Highway Agency.