US Bridges

HWY Mill ST over Water Asnebumskit River

Fair

Worcester County, Massachusetts · 0.7 Mi. S. Rt. 31 · Structure no. H180101FTMUNNBI

Built
1989
36 years old
Condition
Fair
inspected May 2023
Type
Arch - Deck
Aluminum, Wrought Iron, or Cast Iron
Length
50 ft
1 main span
Daily traffic
100
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Mill ST over Water Asnebumskit River is a aluminum, wrought iron, or cast iron arch - deck carrying HWY Mill ST over Water Asnebumskit River in Worcester County, Massachusetts. It was built in 1989, so it is 36 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 5 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 158 by 2032. The structure is 50 ft (15.2 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Mill ST
CrossesWater Asnebumskit River
Location0.7 Mi. S. Rt. 31
RouteCity Street 0
CountyWorcester County
StateMassachusetts
Coordinates42.37319, -71.85357
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
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating100.8 US tons
Inventory rating60.3 US tons

Structure

Structure typeArch - Deck
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadH 20
Structure length50 ft (15.2 m)
Longest span24 ft (7.3 m)
Deck width30 ft (9.2 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic158 by 2032
Trucks1%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Mill ST over Water Asnebumskit River built?

It was built in 1989, making it 36 years old in 2025.

What condition is HWY Mill ST over Water Asnebumskit 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 May 2023.

How much traffic does HWY Mill ST over Water Asnebumskit River carry?

About 100 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is HWY Mill ST over Water Asnebumskit River?

The structure is 50 ft (15.2 m) long with a longest span of 24 ft (7.3 m) and a deck 30 ft wide.

Who owns HWY Mill ST over Water Asnebumskit River?

It is owned by the Town or Township Highway Agency.