US Bridges

HWY Mt Vernon ST over Water Aberjona River

Fair

Middlesex County, Massachusetts · Btw Twn Hall & Fire Sta. · Structure no. W400132CJMUNNBI

Built
1890
135 years old, rebuilt 2016
Condition
Fair
inspected December 2023
Type
Slab
Masonry
Length
45 ft
4 main spans
Daily traffic
10,600
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Mt Vernon ST over Water Aberjona River is a masonry slab carrying HWY Mt Vernon ST over Water Aberjona River in Middlesex County, Massachusetts. It was built in 1890 and reconstructed in 2016, so it is 135 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 10,600 vehicles a day, roughly 2% of them trucks, projected to reach 23,279 by 2032. The structure is 45 ft (13.6 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHWY Mt Vernon ST
CrossesWater Aberjona River
LocationBtw Twn Hall & Fire Sta.
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.45295, -71.13534
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialMasonry
DeckNot applicable
Main spans4
Design loadUnknown
Structure length45 ft (13.6 m)
Longest span8 ft (2.4 m)
Deck width56 ft (17.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,600 (2019)
Projected traffic23,279 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$689,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Mt Vernon ST over Water Aberjona River built?

It was built in 1890, making it 135 years old in 2025. It was reconstructed in 2016.

What condition is HWY Mt Vernon ST over Water Aberjona River 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 December 2023.

How much traffic does HWY Mt Vernon ST over Water Aberjona River carry?

About 10,600 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is HWY Mt Vernon ST over Water Aberjona River?

The structure is 45 ft (13.6 m) long with a longest span of 8 ft (2.4 m) and a deck 56 ft wide.

Who owns HWY Mt Vernon ST over Water Aberjona River?

It is owned by the Town or Township Highway Agency.