US Bridges

HWY Mendon RD over Water West River

Poor

Worcester County, Massachusetts · .6 Mi. W. of Mendon T.L. · Structure no. N210081D0MUNNBI

Built
1959
66 years old
Condition
Poor
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
144 ft
3 main spans
Daily traffic
3,144
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Mendon RD over Water West River is a steel stringer/multi-beam or girder carrying HWY Mendon RD over Water West River in Worcester County, Massachusetts. It was built in 1959, so it is 66 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.

It carries about 3,144 vehicles a day, roughly 6% of them trucks, projected to reach 8,212 by 2032. The structure is 144 ft (43.9 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesHWY Mendon RD
CrossesWater West River
Location.6 Mi. W. of Mendon T.L.
RouteCity Street 0
Coordinates42.12296, -71.60622
Functional classUrban Minor Arterial

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating26.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length144 ft (43.9 m)
Longest span46 ft (14 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,144 (2023)
Projected traffic8,212 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$10.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Mendon RD over Water West River built?

It was built in 1959, making it 66 years old in 2025.

What condition is HWY Mendon RD over Water West River 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 September 2023.

How much traffic does HWY Mendon RD over Water West River carry?

About 3,144 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is HWY Mendon RD over Water West River?

The structure is 144 ft (43.9 m) long with a longest span of 46 ft (14 m) and a deck 33 ft wide.

Who owns HWY Mendon RD over Water West River?

It is owned by the Town or Township Highway Agency.