US Bridges

ST 60 Medford ST over Water Mystic River

Fair

Middlesex County, Massachusetts · Town Line Med Arl · Structure no. A100094D2DOTNBI

Built
1936
89 years old
Condition
Fair
inspected September 2023
Type
Arch - Deck
Concrete
Length
50 ft
1 main span
Daily traffic
24,310
2019 count
Owner
State
State Highway Agency

About this bridge

ST 60 Medford ST over Water Mystic River is a concrete arch - deck carrying ST 60 Medford ST over Water Mystic River in Middlesex County, Massachusetts. It was built in 1936, so it is 89 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 24,310 vehicles a day, roughly 9% of them trucks, projected to reach 44,220 by 2032. The structure is 50 ft (15.2 m) long and 80 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 60 Medford ST
CrossesWater Mystic River
LocationTown Line Med Arl
RouteState Highway 60
CountyMiddlesex County
StateMassachusetts
Coordinates42.42057, -71.14288
Functional classUrban Other Principal 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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width80 ft (24.5 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,310 (2019)
Projected traffic44,220 by 2032
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$3.8 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 60 Medford ST over Water Mystic River built?

It was built in 1936, making it 89 years old in 2025.

What condition is ST 60 Medford ST over Water Mystic 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 September 2023.

How much traffic does ST 60 Medford ST over Water Mystic River carry?

About 24,310 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is ST 60 Medford ST over Water Mystic River?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 80 ft wide.

Who owns ST 60 Medford ST over Water Mystic River?

It is owned by the State Highway Agency.