US Bridges

I 93 over HWY Riverside DR

Fair

Essex County, Massachusetts · At Merrimac River · Structure no. M170072UPDOTNBI

Built
1959
66 years old, rebuilt 1975
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
312 ft
4 main spans
Daily traffic
133,000
2018 count
Owner
State
State Highway Agency

About this bridge

I 93 over HWY Riverside DR is a steel continuous stringer/multi-beam or girder carrying I 93 over HWY Riverside DR in Essex County, Massachusetts. It was built in 1959 and reconstructed in 1975, so it is 66 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 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 133,000 vehicles a day, roughly 12% of them trucks, projected to reach 207,591 by 2032. The structure is 312 ft (95.1 m) long and 143 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI 93
CrossesHWY Riverside DR
LocationAt Merrimac River
RouteInterstate 93
CountyEssex County
StateMassachusetts
Coordinates42.70219, -71.21011
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69 US tons
Inventory rating41.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length312 ft (95.1 m)
Longest span83 ft (25.3 m)
Deck width143 ft (43.5 m)
Roadway width132 ft (40.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic133,000 (2018)
Projected traffic207,591 by 2032
Trucks12%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$8.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 over HWY Riverside DR built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1975.

What condition is I 93 over HWY Riverside DR 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 October 2023.

How much traffic does I 93 over HWY Riverside DR carry?

About 133,000 vehicles per day (2018 count), of which roughly 12% are trucks.

How long is I 93 over HWY Riverside DR?

The structure is 312 ft (95.1 m) long with a longest span of 83 ft (25.3 m) and a deck 143 ft wide.

Who owns I 93 over HWY Riverside DR?

It is owned by the State Highway Agency.