US Bridges

HWY Main ST over Water Sudbury River

GoodPosted for load

Middlesex County, Massachusetts · .1 MI S of ST-9 · Structure no. F07005247MUNNBI

Built
1878
147 years old, rebuilt 2009
Condition
Good
inspected December 2023
Type
Truss - Thru
Aluminum, Wrought Iron, or Cast Iron
Length
77 ft
1 main span
Daily traffic
7,950
2013 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Main ST over Water Sudbury River is a aluminum, wrought iron, or cast iron truss - thru carrying HWY Main ST over Water Sudbury River in Middlesex County, Massachusetts. It was built in 1878 and reconstructed in 2009, so it is 147 years old, older 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. Its operating status is: posted for load restriction.

It carries about 7,950 vehicles a day, roughly 6% of them trucks, projected to reach 12,555 by 2032. The structure is 77 ft (23.4 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY Main ST
CrossesWater Sudbury River
Location.1 MI S of ST-9
RouteCity Street 0
Coordinates42.29706, -71.42724
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 protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating37.3 US tons
Inventory rating22.3 US tons

Structure

Structure typeTruss - Thru
MaterialAluminum, Wrought Iron, or Cast Iron
DeckWood or timber
Main spans1
Design loadH 15
Structure length77 ft (23.4 m)
Longest span67 ft (20.3 m)
Deck width33 ft (10.2 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,950 (2013)
Projected traffic12,555 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Main ST over Water Sudbury River built?

It was built in 1878, making it 147 years old in 2025. It was reconstructed in 2009.

What condition is HWY Main ST over Water Sudbury 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 Main ST over Water Sudbury River carry?

About 7,950 vehicles per day (2013 count), of which roughly 6% are trucks.

How long is HWY Main ST over Water Sudbury River?

The structure is 77 ft (23.4 m) long with a longest span of 67 ft (20.3 m) and a deck 33 ft wide.

Who owns HWY Main ST over Water Sudbury River?

It is owned by the Town or Township Highway Agency.