US Bridges

ST 16 Mendon ST over Water West River

Fair

Worcester County, Massachusetts · 1.1 Mi. E. of ST-122 · Structure no. U020161LRDOTNBI

Built
1912
113 years old, rebuilt 1949
Condition
Fair
inspected September 2023
Type
Arch - Deck
Masonry
Length
31 ft
1 main span
Daily traffic
10,157
2022 count
Owner
State
State Highway Agency

About this bridge

ST 16 Mendon ST over Water West River is a masonry arch - deck carrying ST 16 Mendon ST over Water West River in Worcester County, Massachusetts. It was built in 1912 and reconstructed in 1949, so it is 113 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 10,157 vehicles a day, roughly 5% of them trucks, projected to reach 25,269 by 2032. The structure is 31 ft (9.4 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesST 16 Mendon ST
CrossesWater West River
Location1.1 Mi. E. of ST-122
RouteState Highway 16
CountyWorcester County
StateMassachusetts
Coordinates42.08358, -71.6073
Functional classUrban Other Principal 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
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span27 ft (8.2 m)
Deck width49 ft (14.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,157 (2022)
Projected traffic25,269 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$281,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 16 Mendon ST over Water West River built?

It was built in 1912, making it 113 years old in 2025. It was reconstructed in 1949.

What condition is ST 16 Mendon ST over Water West River 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 September 2023.

How much traffic does ST 16 Mendon ST over Water West River carry?

About 10,157 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is ST 16 Mendon ST over Water West River?

The structure is 31 ft (9.4 m) long with a longest span of 27 ft (8.2 m) and a deck 49 ft wide.

Who owns ST 16 Mendon ST over Water West River?

It is owned by the State Highway Agency.