US Bridges

ST110 /ST113/RIVER over I 495

Fair

Essex County, Massachusetts · .6 KM N Merrimac River · Structure no. H120412YDDOTNBI

Built
1964
61 years old, rebuilt 2015
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
355 ft
6 main spans
Daily traffic
19,876
2022 count
Owner
State
State Highway Agency

About this bridge

ST110 /ST113/RIVER over I 495 is a steel stringer/multi-beam or girder carrying ST110 /ST113/RIVER over I 495 in Essex County, Massachusetts. It was built in 1964 and reconstructed in 2015, so it is 61 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 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 19,876 vehicles a day, roughly 7% of them trucks, projected to reach 47,221 by 2032. The structure is 355 ft (108.2 m) long and 53 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesST110 /ST113/RIVER
CrossesI 495
Location.6 KM N Merrimac River
RouteState Highway 110
CountyEssex County
StateMassachusetts
Coordinates42.77381, -71.11898
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length355 ft (108.2 m)
Longest span75 ft (22.9 m)
Deck width53 ft (16.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,876 (2022)
Projected traffic47,221 by 2032
Trucks7%
Lanes on structure2
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$17.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST110 /ST113/RIVER over I 495 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2015.

What condition is ST110 /ST113/RIVER over I 495 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 February 2025.

How much traffic does ST110 /ST113/RIVER over I 495 carry?

About 19,876 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is ST110 /ST113/RIVER over I 495?

The structure is 355 ft (108.2 m) long with a longest span of 75 ft (22.9 m) and a deck 53 ft wide.

Who owns ST110 /ST113/RIVER over I 495?

It is owned by the State Highway Agency.