US Bridges

US 3 SB over Water Shawsheen River

Good

Middlesex County, Massachusetts · 0.5 MI NW Rt 62 & Rt 3 · Structure no. B04012737DOTNBI

Built
2004
21 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
1 main span
Daily traffic
60,000
2019 count
Owner
State
State Highway Agency

About this bridge

US 3 SB over Water Shawsheen River is a steel stringer/multi-beam or girder carrying US 3 SB over Water Shawsheen River in Middlesex County, Massachusetts. It was built in 2004, so it is 21 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 60,000 vehicles a day, roughly 10% of them trucks, projected to reach 94,758 by 2032. The structure is 100 ft (30.4 m) long and 78 ft wide.

CarriesUS 3 SB
CrossesWater Shawsheen River
Location0.5 MI NW Rt 62 & Rt 3
RouteU.S. Route 3
Coordinates42.50867, -71.25019
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.9 US tons
Inventory rating63.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length100 ft (30.4 m)
Longest span95 ft (29.1 m)
Deck width78 ft (23.8 m)
Roadway width75 ft (22.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60,000 (2019)
Projected traffic94,758 by 2032
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 3 SB over Water Shawsheen River built?

It was built in 2004, making it 21 years old in 2025.

What condition is US 3 SB over Water Shawsheen 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 June 2023.

How much traffic does US 3 SB over Water Shawsheen River carry?

About 60,000 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is US 3 SB over Water Shawsheen River?

The structure is 100 ft (30.4 m) long with a longest span of 95 ft (29.1 m) and a deck 78 ft wide.

Who owns US 3 SB over Water Shawsheen River?

It is owned by the State Highway Agency.