US Bridges

US 20 Cape ST over Water Greenwater Brook

Fair

Berkshire County, Massachusetts · 1.7 MI E of Maple ST · Structure no. L050270AWDOTNBI

Built
1956
69 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
22 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 concrete culvert carrying US 20 Cape ST over Water Greenwater Brook in Berkshire County, Massachusetts. It was built in 1956, so it is 69 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 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 4,745 vehicles a day, roughly 9% of them trucks, projected to reach 6,475 by 2032. The structure is 22 ft (6.8 m) long. 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
Location1.7 MI E of Maple ST
RouteU.S. Route 20
CountyBerkshire County
StateMassachusetts
Coordinates42.29682, -73.18744
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.4 US tons
Inventory rating51.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length22 ft (6.8 m)
Longest span22 ft (6.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 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
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$712,000 (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 1956, making it 69 years old in 2025.

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 22 ft (6.8 m) long with a longest span of 22 ft (6.8 m).

Who owns US 20 Cape ST over Water Greenwater Brook?

It is owned by the State Highway Agency.