US Bridges

ST141 Grattan ST over I 391

Fair

Hampden County, Massachusetts · Mm 3.9 on I-391 · Structure no. C13045123DOTNBI

Built
1979
46 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
210 ft
2 main spans
Daily traffic
10,701
2022 count
Owner
State
State Highway Agency

About this bridge

ST141 Grattan ST over I 391 is a steel continuous stringer/multi-beam or girder carrying ST141 Grattan ST over I 391 in Hampden County, Massachusetts. It was built in 1979, so it is 46 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 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 10,701 vehicles a day, roughly 10% of them trucks, projected to reach 17,056 by 2032. The structure is 210 ft (64.1 m) long and 101 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesST141 Grattan ST
CrossesI 391
LocationMm 3.9 on I-391
RouteState Highway 141
CountyHampden County
StateMassachusetts
Coordinates42.18128, -72.60551
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length210 ft (64.1 m)
Longest span103 ft (31.5 m)
Deck width101 ft (30.9 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,701 (2022)
Projected traffic17,056 by 2032
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$5.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST141 Grattan ST over I 391 built?

It was built in 1979, making it 46 years old in 2025.

What condition is ST141 Grattan ST over I 391 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 November 2023.

How much traffic does ST141 Grattan ST over I 391 carry?

About 10,701 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is ST141 Grattan ST over I 391?

The structure is 210 ft (64.1 m) long with a longest span of 103 ft (31.5 m) and a deck 101 ft wide.

Who owns ST141 Grattan ST over I 391?

It is owned by the State Highway Agency.