US Bridges

ST112 East Main ST over Comb CSX & Westfld Riv

Fair

Hampshire County, Massachusetts · 300NE of JCT W/Us RTE 20 · Structure no. H270060DHDOT634

Built
1938
87 years old
Condition
Fair
inspected August 2024
Type
Arch - Thru
Steel
Length
528 ft
1 main span
Daily traffic
7,758
2024 count
Owner
State
State Highway Agency

About this bridge

ST112 East Main ST over Comb CSX & Westfld Riv is a steel arch - thru carrying ST112 East Main ST over Comb CSX & Westfld Riv in Hampshire County, Massachusetts. It was built in 1938, so it is 87 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 7,758 vehicles a day, roughly 7% of them trucks, projected to reach 13,266 by 2031. The structure is 528 ft (160.9 m) long and 57 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesST112 East Main ST
CrossesComb CSX & Westfld Riv
Location300NE of JCT W/Us RTE 20
RouteState Highway 112
CountyHampshire County
StateMassachusetts
Coordinates42.23441, -72.87832
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.7 US tons
Inventory rating29.2 US tons

Structure

Structure typeArch - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadH 20
Structure length528 ft (160.9 m)
Longest span180 ft (54.9 m)
Deck width57 ft (17.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck13 ft (4.1 m)

Traffic and service

Average daily traffic7,758 (2024)
Projected traffic13,266 by 2031
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
Detour if closed7.5 mi (12 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$27.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST112 East Main ST over Comb CSX & Westfld Riv built?

It was built in 1938, making it 87 years old in 2025.

What condition is ST112 East Main ST over Comb CSX & Westfld Riv 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 ST112 East Main ST over Comb CSX & Westfld Riv carry?

About 7,758 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is ST112 East Main ST over Comb CSX & Westfld Riv?

The structure is 528 ft (160.9 m) long with a longest span of 180 ft (54.9 m) and a deck 57 ft wide.

Who owns ST112 East Main ST over Comb CSX & Westfld Riv?

It is owned by the State Highway Agency.