US Bridges

ST111 Mass Ave over Water Fort Pond Brook

Fair

Middlesex County, Massachusetts · 1.5 MI W Rt 2 & ST 111 · Structure no. A0200628KDOTNBI

Built
1907
118 years old, rebuilt 1998
Condition
Fair
inspected December 2024
Type
Tee Beam
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
12,700
2024 count
Owner
State
State Highway Agency

About this bridge

ST111 Mass Ave over Water Fort Pond Brook is a concrete continuous tee beam carrying ST111 Mass Ave over Water Fort Pond Brook in Middlesex County, Massachusetts. It was built in 1907 and reconstructed in 1998, so it is 118 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 12,700 vehicles a day, roughly 5% of them trucks, projected to reach 12,161 by 2031. The structure is 22 ft (6.7 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesST111 Mass Ave
CrossesWater Fort Pond Brook
Location1.5 MI W Rt 2 & ST 111
RouteState Highway 111
Coordinates42.47594, -71.46774
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.6 US tons
Inventory rating49.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span9 ft (2.7 m)
Deck width36 ft (11 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,700 (2024)
Projected traffic12,161 by 2031
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$751,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST111 Mass Ave over Water Fort Pond Brook built?

It was built in 1907, making it 118 years old in 2025. It was reconstructed in 1998.

What condition is ST111 Mass Ave over Water Fort Pond Brook 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 2024.

How much traffic does ST111 Mass Ave over Water Fort Pond Brook carry?

About 12,700 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is ST111 Mass Ave over Water Fort Pond Brook?

The structure is 22 ft (6.7 m) long with a longest span of 9 ft (2.7 m) and a deck 36 ft wide.

Who owns ST111 Mass Ave over Water Fort Pond Brook?

It is owned by the State Highway Agency.