US Bridges

ST 97 Broadway over I 495 SB

Fair

Essex County, Massachusetts · 1.1 KM N Merrimac River · Structure no. H1204330HDOTNBI

Built
1961
64 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
175 ft
3 main spans
Daily traffic
48,897
2018 count
Owner
State
State Highway Agency

About this bridge

ST 97 Broadway over I 495 SB is a steel stringer/multi-beam or girder carrying ST 97 Broadway over I 495 SB in Essex 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 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 48,897 vehicles a day, roughly 6% of them trucks, projected to reach 59,382 by 2032. The structure is 175 ft (53.3 m) long and 93 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesST 97 Broadway
CrossesI 495 SB
Location1.1 KM N Merrimac River
RouteState Highway 97
CountyEssex County
StateMassachusetts
Coordinates42.78338, -71.11589
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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length175 ft (53.3 m)
Longest span71 ft (21.7 m)
Deck width93 ft (28.3 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,897 (2018)
Projected traffic59,382 by 2032
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$14.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 97 Broadway over I 495 SB built?

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

What condition is ST 97 Broadway over I 495 SB 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 August 2023.

How much traffic does ST 97 Broadway over I 495 SB carry?

About 48,897 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is ST 97 Broadway over I 495 SB?

The structure is 175 ft (53.3 m) long with a longest span of 71 ft (21.7 m) and a deck 93 ft wide.

Who owns ST 97 Broadway over I 495 SB?

It is owned by the State Highway Agency.