US Bridges

HWY Mill ST over Water Nashua River

Good

Worcester County, Massachusetts · .2 Mi. West of St. 110 · Structure no. L02005AE0MUNNBI

Built
1996
29 years old
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
105 ft
1 main span
Daily traffic
5,800
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Mill ST over Water Nashua River is a prestressed concrete box beam or girders - single or spread carrying HWY Mill ST over Water Nashua River in Worcester County, Massachusetts. It was built in 1996, so it is 29 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 5,800 vehicles a day, roughly 7% of them trucks, projected to reach 4,580 by 2031. The structure is 105 ft (32 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesHWY Mill ST
CrossesWater Nashua River
Location.2 Mi. West of St. 110
RouteCity Street 0
Coordinates42.43852, -71.68116
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
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 alignment7: Better than present minimum criteria
Operating rating96.3 US tons
Inventory rating57.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length105 ft (32 m)
Longest span98 ft (30 m)
Deck width34 ft (10.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2024)
Projected traffic4,580 by 2031
Trucks7%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$4.2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Mill ST over Water Nashua River built?

It was built in 1996, making it 29 years old in 2025.

What condition is HWY Mill ST over Water 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 2024.

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

About 5,800 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is HWY Mill ST over Water Nashua River?

The structure is 105 ft (32 m) long with a longest span of 98 ft (30 m) and a deck 34 ft wide.

Who owns HWY Mill ST over Water Nashua River?

It is owned by the Town or Township Highway Agency.