US Bridges

HWY Parker ST over ST 9 Boylston ST

Fair

Middlesex County, Massachusetts · 2.1 Mi. East Rte. 128 · Structure no. N120532LGDOTNBI

Built
1932
93 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
69 ft
2 main spans
Daily traffic
20,302
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Parker ST over ST 9 Boylston ST is a steel continuous stringer/multi-beam or girder carrying HWY Parker ST over ST 9 Boylston ST in Middlesex County, Massachusetts. It was built in 1932, so it is 93 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 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 20,302 vehicles a day, roughly 6% of them trucks, projected to reach 19,267 by 2032. The structure is 69 ft (21 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY Parker ST
CrossesST 9 Boylston ST
Location2.1 Mi. East Rte. 128
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.31902, -71.19439
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating26.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length69 ft (21 m)
Longest span30 ft (9.1 m)
Deck width60 ft (18.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,302 (2023)
Projected traffic19,267 by 2032
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Parker ST over ST 9 Boylston ST built?

It was built in 1932, making it 93 years old in 2025.

What condition is HWY Parker ST over ST 9 Boylston ST 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 February 2023.

How much traffic does HWY Parker ST over ST 9 Boylston ST carry?

About 20,302 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is HWY Parker ST over ST 9 Boylston ST?

The structure is 69 ft (21 m) long with a longest span of 30 ft (9.1 m) and a deck 60 ft wide.

Who owns HWY Parker ST over ST 9 Boylston ST?

It is owned by the State Highway Agency.