US Bridges

ST 13 Main ST over Water N Nashua River

Fair

Worcester County, Massachusetts · 500 Ft E of ST.2 · Structure no. L080021LMDOTNBI

Built
1872
153 years old, rebuilt 2004
Condition
Fair
inspected August 2024
Type
Arch - Deck
Masonry
Length
86 ft
2 main spans
Daily traffic
22,603
2023 count
Owner
State
State Highway Agency

About this bridge

ST 13 Main ST over Water N Nashua River is a masonry arch - deck carrying ST 13 Main ST over Water N Nashua River in Worcester County, Massachusetts. It was built in 1872 and reconstructed in 2004, so it is 153 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 22,603 vehicles a day, roughly 2% of them trucks, projected to reach 42,641 by 2031. The structure is 86 ft (26.2 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesST 13 Main ST
CrossesWater N Nashua River
Location500 Ft E of ST.2
RouteState Highway 13
Coordinates42.53966, -71.74244
Functional classUrban Other Principal 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
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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating110 US tons
Inventory rating109.9 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans2
Design loadUnknown
Structure length86 ft (26.2 m)
Longest span40 ft (12.2 m)
Deck width47 ft (14.4 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,603 (2023)
Projected traffic42,641 by 2031
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.8 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 13 Main ST over Water N Nashua River built?

It was built in 1872, making it 153 years old in 2025. It was reconstructed in 2004.

What condition is ST 13 Main ST over Water N Nashua 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 August 2024.

How much traffic does ST 13 Main ST over Water N Nashua River carry?

About 22,603 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is ST 13 Main ST over Water N Nashua River?

The structure is 86 ft (26.2 m) long with a longest span of 40 ft (12.2 m) and a deck 47 ft wide.

Who owns ST 13 Main ST over Water N Nashua River?

It is owned by the State Highway Agency.