US Bridges

HWY Mill ST over ST 57

Good

Hampden County, Massachusetts · Mm 42.5 on ST 57 · Structure no. A05022AD5DOTNBI

Built
1991
34 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
183 ft
2 main spans
Daily traffic
8,147
2017 count
Owner
State
State Highway Agency

About this bridge

HWY Mill ST over ST 57 is a prestressed concrete stringer/multi-beam or girder carrying HWY Mill ST over ST 57 in Hampden County, Massachusetts. It was built in 1991, so it is 34 years old, younger 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.

It carries about 8,147 vehicles a day, roughly 6% of them trucks, projected to reach 8,576 by 2033. The structure is 183 ft (55.7 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHWY Mill ST
CrossesST 57
LocationMm 42.5 on ST 57
RouteCity Street 0
Coordinates42.07089, -72.64083
Functional classUrban Collector

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.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating41.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length183 ft (55.7 m)
Longest span89 ft (27.2 m)
Deck width45 ft (13.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,147 (2017)
Projected traffic8,576 by 2033
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$3.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Mill ST over ST 57 built?

It was built in 1991, making it 34 years old in 2025.

What condition is HWY Mill ST over ST 57 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 January 2024.

How much traffic does HWY Mill ST over ST 57 carry?

About 8,147 vehicles per day (2017 count), of which roughly 6% are trucks.

How long is HWY Mill ST over ST 57?

The structure is 183 ft (55.7 m) long with a longest span of 89 ft (27.2 m) and a deck 45 ft wide.

Who owns HWY Mill ST over ST 57?

It is owned by the State Highway Agency.