US Bridges

HWY Mechanic ST over Water N Nashua River

Good

Worcester County, Massachusetts · 500 Ft W of I-190 · Structure no. L08003AQAMUNNBI

Built
2010
15 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
197 ft
3 main spans
Daily traffic
6,185
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

HWY Mechanic ST over Water N Nashua River is a steel continuous stringer/multi-beam or girder carrying HWY Mechanic ST over Water N Nashua River in Worcester County, Massachusetts. It was built in 2010, so it is 15 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,185 vehicles a day, roughly 6% of them trucks, projected to reach 3,948 by 2032. The structure is 197 ft (60 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesHWY Mechanic ST
CrossesWater N Nashua River
Location500 Ft W of I-190
RouteCity Street 0
Coordinates42.51958, -71.72725
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.2 US tons
Inventory rating57.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length197 ft (60 m)
Longest span94 ft (28.5 m)
Deck width43 ft (13.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,185 (2022)
Projected traffic3,948 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$7.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Mechanic ST over Water N Nashua River built?

It was built in 2010, making it 15 years old in 2025.

What condition is HWY Mechanic ST over Water N Nashua River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does HWY Mechanic ST over Water N Nashua River carry?

About 6,185 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is HWY Mechanic ST over Water N Nashua River?

The structure is 197 ft (60 m) long with a longest span of 94 ft (28.5 m) and a deck 43 ft wide.

Who owns HWY Mechanic ST over Water N Nashua River?

It is owned by the City or Municipal Highway Agency.