US Bridges

HWY Mishawum RD over I 95 /ST128

Poor

Middlesex County, Massachusetts · 1 MI NE RTE 38 · Structure no. W430252MDDOTNBI

Built
1961
64 years old
Condition
Poor
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
228 ft
4 main spans
Daily traffic
13,700
2017 count
Owner
State
State Highway Agency

About this bridge

HWY Mishawum RD over I 95 /ST128 is a steel stringer/multi-beam or girder carrying HWY Mishawum RD over I 95 /ST128 in Middlesex County, Massachusetts. It was built in 1961, so it is 64 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 13,700 vehicles a day, roughly 8% of them trucks, projected to reach 39,482 by 2032. The structure is 228 ft (69.5 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY Mishawum RD
CrossesI 95 /ST128
Location1 MI NE RTE 38
RouteCity Street 0
Coordinates42.50138, -71.14219
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating50.7 US tons
Inventory rating30.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length228 ft (69.5 m)
Longest span80 ft (24.4 m)
Deck width41 ft (12.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,700 (2017)
Projected traffic39,482 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$16.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Mishawum RD over I 95 /ST128 built?

It was built in 1961, making it 64 years old in 2025.

What condition is HWY Mishawum RD over I 95 /ST128 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does HWY Mishawum RD over I 95 /ST128 carry?

About 13,700 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is HWY Mishawum RD over I 95 /ST128?

The structure is 228 ft (69.5 m) long with a longest span of 80 ft (24.4 m) and a deck 41 ft wide.

Who owns HWY Mishawum RD over I 95 /ST128?

It is owned by the State Highway Agency.