US Bridges

ST 8 S Main ST over Water Silvernail Brook

Fair

Berkshire County, Massachusetts · O.6 MI N of Conn.Sl · Structure no. S030300BVDOTNBI

Built
1965
60 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
1 main span
Daily traffic
2,747
2019 count
Owner
State
State Highway Agency

About this bridge

ST 8 S Main ST over Water Silvernail Brook is a steel stringer/multi-beam or girder carrying ST 8 S Main ST over Water Silvernail Brook in Berkshire County, Massachusetts. It was built in 1965, so it is 60 years old, younger 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 2,747 vehicles a day, roughly 10% of them trucks, projected to reach 4,580 by 2031. The structure is 84 ft (25.6 m) long and 45 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesST 8 S Main ST
CrossesWater Silvernail Brook
LocationO.6 MI N of Conn.Sl
RouteState Highway 8
CountyBerkshire County
StateMassachusetts
Coordinates42.04806, -73.05917
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMarch 2024
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 rating53.1 US tons
Inventory rating24.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length84 ft (25.6 m)
Longest span75 ft (22.8 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,747 (2019)
Projected traffic4,580 by 2031
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$3.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 8 S Main ST over Water Silvernail Brook built?

It was built in 1965, making it 60 years old in 2025.

What condition is ST 8 S Main ST over Water Silvernail 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 March 2024.

How much traffic does ST 8 S Main ST over Water Silvernail Brook carry?

About 2,747 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is ST 8 S Main ST over Water Silvernail Brook?

The structure is 84 ft (25.6 m) long with a longest span of 75 ft (22.8 m) and a deck 45 ft wide.

Who owns ST 8 S Main ST over Water Silvernail Brook?

It is owned by the State Highway Agency.