US Bridges

HWY Bridge ST over Water West-North Bay

PoorPosted for load

Barnstable County, Massachusetts · 2.1 MI S of Rt 28 · Structure no. B01003435MUNNBI

Built
1946
79 years old
Condition
Poor
inspected July 2023
Type
Movable - Bascule
Steel
Length
202 ft
1 main span
Daily traffic
2,692
2018 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Bridge ST over Water West-North Bay is a steel movable - bascule carrying HWY Bridge ST over Water West-North Bay in Barnstable County, Massachusetts. It was built in 1946, so it is 79 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 2,692 vehicles a day, roughly 6% of them trucks, projected to reach 4,738 by 2032. The structure is 202 ft (61.6 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHWY Bridge ST
CrossesWater West-North Bay
Location2.1 MI S of Rt 28
RouteCity Street 0
Coordinates41.62319, -70.39672
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.2 US tons
Inventory rating27.1 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckOpen grating
Main spans1 (+2 approach)
Design loadH 15
Structure length202 ft (61.6 m)
Longest span75 ft (22.9 m)
Deck width31 ft (9.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,692 (2018)
Projected traffic4,738 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$14.5 million (2025 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was HWY Bridge ST over Water West-North Bay built?

It was built in 1946, making it 79 years old in 2025.

What condition is HWY Bridge ST over Water West-North Bay in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does HWY Bridge ST over Water West-North Bay carry?

About 2,692 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is HWY Bridge ST over Water West-North Bay?

The structure is 202 ft (61.6 m) long with a longest span of 75 ft (22.9 m) and a deck 31 ft wide.

Who owns HWY Bridge ST over Water West-North Bay?

It is owned by the Town or Township Highway Agency.