US Bridges

HWY Brookline Av over Comb I 90 & Mbta/Csx

Fair

Suffolk County, Massachusetts · At Fenway Park S51 · Structure no. B160534T3DOTNBI

Built
1965
60 years old, rebuilt 1998
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
199 ft
3 main spans
Daily traffic
12,155
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Brookline Av over Comb I 90 & Mbta/Csx is a steel stringer/multi-beam or girder carrying HWY Brookline Av over Comb I 90 & Mbta/Csx in Suffolk County, Massachusetts. It was built in 1965 and reconstructed in 1998, so it is 60 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 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 12,155 vehicles a day, roughly 15% of them trucks, projected to reach 17,372 by 2031. The structure is 199 ft (60.7 m) long and 62 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHWY Brookline Av
CrossesComb I 90 & Mbta/Csx
LocationAt Fenway Park S51
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.34787, -71.0979
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.9 US tons
Inventory rating70.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length199 ft (60.7 m)
Longest span70 ft (21.3 m)
Deck width62 ft (19 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,155 (2024)
Projected traffic17,372 by 2031
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$11.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Brookline Av over Comb I 90 & Mbta/Csx built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1998.

What condition is HWY Brookline Av over Comb I 90 & Mbta/Csx 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 March 2024.

How much traffic does HWY Brookline Av over Comb I 90 & Mbta/Csx carry?

About 12,155 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is HWY Brookline Av over Comb I 90 & Mbta/Csx?

The structure is 199 ft (60.7 m) long with a longest span of 70 ft (21.3 m) and a deck 62 ft wide.

Who owns HWY Brookline Av over Comb I 90 & Mbta/Csx?

It is owned by the State Highway Agency.