US Bridges

I 90 EB over ST183 Interlaken RD

Fair

Berkshire County, Massachusetts · At Mm 5.4 · Structure no. S260134H6DOTNBI

Built
1957
68 years old, rebuilt 1993
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
106 ft
3 main spans
Daily traffic
9,477
2020 count
Owner
State
State Highway Agency

About this bridge

I 90 EB over ST183 Interlaken RD is a steel stringer/multi-beam or girder carrying I 90 EB over ST183 Interlaken RD in Berkshire County, Massachusetts. It was built in 1957 and reconstructed in 1993, so it is 68 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 9,477 vehicles a day, roughly 22% of them trucks, projected to reach 36,087 by 2031. The structure is 106 ft (32.4 m) long and 45 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesI 90 EB
CrossesST183 Interlaken RD
LocationAt Mm 5.4
RouteInterstate 90
CountyBerkshire County
StateMassachusetts
Coordinates42.30425, -73.33385
Functional classRural 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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating29.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length106 ft (32.4 m)
Longest span40 ft (12.1 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,477 (2020)
Projected traffic36,087 by 2031
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$4.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 EB over ST183 Interlaken RD built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1993.

What condition is I 90 EB over ST183 Interlaken RD 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 2024.

How much traffic does I 90 EB over ST183 Interlaken RD carry?

About 9,477 vehicles per day (2020 count), of which roughly 22% are trucks.

How long is I 90 EB over ST183 Interlaken RD?

The structure is 106 ft (32.4 m) long with a longest span of 40 ft (12.1 m) and a deck 45 ft wide.

Who owns I 90 EB over ST183 Interlaken RD?

It is owned by the State Highway Agency.