US Bridges

HWY Sudbury RD over Water Assabet River

FairPosted for load

Middlesex County, Massachusetts · 0.8 Mi. E. of Rt. 62 · Structure no. S29004262MUNNBI

Built
1902
123 years old, rebuilt 1985
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
50 ft
2 main spans
Daily traffic
5,400
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Sudbury RD over Water Assabet River is a wood or timber stringer/multi-beam or girder carrying HWY Sudbury RD over Water Assabet River in Middlesex County, Massachusetts. It was built in 1902 and reconstructed in 1985, so it is 123 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. Its operating status is: posted for load restriction.

It carries about 5,400 vehicles a day, roughly 2% of them trucks, projected to reach 6,428 by 2032. The structure is 50 ft (15.2 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesHWY Sudbury RD
CrossesWater Assabet River
Location0.8 Mi. E. of Rt. 62
RouteCity Street 0
Coordinates42.41166, -71.50835
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.2 US tons
Inventory rating30.2 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span21 ft (6.4 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,400 (2023)
Projected traffic6,428 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Sudbury RD over Water Assabet River built?

It was built in 1902, making it 123 years old in 2025. It was reconstructed in 1985.

What condition is HWY Sudbury RD over Water Assabet 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 HWY Sudbury RD over Water Assabet River carry?

About 5,400 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is HWY Sudbury RD over Water Assabet River?

The structure is 50 ft (15.2 m) long with a longest span of 21 ft (6.4 m) and a deck 24 ft wide.

Who owns HWY Sudbury RD over Water Assabet River?

It is owned by the Town or Township Highway Agency.