US Bridges

HWY Ash ST over Water Weston Reservoir

Fair

Middlesex County, Massachusetts · .9 MI N of I 90 · Structure no. W290234D4DOTNBI

Built
1902
123 years old
Condition
Fair
inspected April 2023
Type
Arch - Deck
Concrete
Length
25 ft
1 main span
Daily traffic
1,810
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Ash ST over Water Weston Reservoir is a concrete arch - deck carrying HWY Ash ST over Water Weston Reservoir in Middlesex County, Massachusetts. It was built in 1902, 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.

It carries about 1,810 vehicles a day, roughly 14% of them trucks, projected to reach 5,212 by 2032. The structure is 25 ft (7.6 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY Ash ST
CrossesWater Weston Reservoir
Location.9 MI N of I 90
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.35145, -71.29823
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
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width35 ft (10.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,810 (2023)
Projected traffic5,212 by 2032
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$899,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Ash ST over Water Weston Reservoir built?

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

What condition is HWY Ash ST over Water Weston Reservoir 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 April 2023.

How much traffic does HWY Ash ST over Water Weston Reservoir carry?

About 1,810 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is HWY Ash ST over Water Weston Reservoir?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 35 ft wide.

Who owns HWY Ash ST over Water Weston Reservoir?

It is owned by the State Highway Agency.