US Bridges

HWY Chapin RD over Water Assabet River

Fair

Middlesex County, Massachusetts · .2 MI S of River Road · Structure no. H25002ABQMUNNBI

Built
1997
28 years old
Condition
Fair
inspected December 2024
Type
Slab
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
3,600
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Chapin RD over Water Assabet River is a prestressed concrete slab carrying HWY Chapin RD over Water Assabet River in Middlesex County, Massachusetts. It was built in 1997, so it is 28 years old, younger 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.

It carries about 3,600 vehicles a day, roughly 3% of them trucks, projected to reach 3,001 by 2031. The structure is 48 ft (14.7 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Chapin RD
CrossesWater Assabet River
Location.2 MI S of River Road
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.38034, -71.58612
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating81.6 US tons
Inventory rating59.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length48 ft (14.7 m)
Longest span44 ft (13.3 m)
Deck width36 ft (10.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2022)
Projected traffic3,001 by 2031
Trucks3%
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.7 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Chapin RD over Water Assabet River built?

It was built in 1997, making it 28 years old in 2025.

What condition is HWY Chapin 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 December 2024.

How much traffic does HWY Chapin RD over Water Assabet River carry?

About 3,600 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is HWY Chapin RD over Water Assabet River?

The structure is 48 ft (14.7 m) long with a longest span of 44 ft (13.3 m) and a deck 36 ft wide.

Who owns HWY Chapin RD over Water Assabet River?

It is owned by the Town or Township Highway Agency.