US Bridges

ST 16 Washngton ST over I 95 /ST128

Fair

Middlesex County, Massachusetts · Rt 16 at Rt 128 · Structure no. N120552LADOTNBI

Built
1962
63 years old, rebuilt 2000
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
239 ft
4 main spans
Daily traffic
67,758
2023 count
Owner
State
State Highway Agency

About this bridge

ST 16 Washngton ST over I 95 /ST128 is a steel continuous stringer/multi-beam or girder carrying ST 16 Washngton ST over I 95 /ST128 in Middlesex County, Massachusetts. It was built in 1962 and reconstructed in 2000, so it is 63 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 6 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 67,758 vehicles a day, roughly 8% of them trucks, projected to reach 101,391 by 2032. The structure is 239 ft (72.8 m) long and 89 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesST 16 Washngton ST
CrossesI 95 /ST128
LocationRt 16 at Rt 128
RouteState Highway 16
CountyMiddlesex County
StateMassachusetts
Coordinates42.3283, -71.25185
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.3 US tons
Inventory rating49.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length239 ft (72.8 m)
Longest span81 ft (24.8 m)
Deck width89 ft (27.1 m)
Roadway width72 ft (22 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67,758 (2023)
Projected traffic101,391 by 2032
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$6.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 16 Washngton ST over I 95 /ST128 built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2000.

What condition is ST 16 Washngton ST over I 95 /ST128 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 April 2023.

How much traffic does ST 16 Washngton ST over I 95 /ST128 carry?

About 67,758 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is ST 16 Washngton ST over I 95 /ST128?

The structure is 239 ft (72.8 m) long with a longest span of 81 ft (24.8 m) and a deck 89 ft wide.

Who owns ST 16 Washngton ST over I 95 /ST128?

It is owned by the State Highway Agency.