US Bridges

HWY Gardner ST over RR MBTA

Fair

Suffolk County, Massachusetts · .8 KM NW of JCTSR109&RT1 · Structure no. B161753HDDOT634

Built
1906
119 years old, rebuilt 1997
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
1,400
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Gardner ST over RR MBTA is a prestressed concrete slab carrying HWY Gardner ST over RR MBTA in Suffolk County, Massachusetts. It was built in 1906 and reconstructed in 1997, so it is 119 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 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 1,400 vehicles a day, projected to reach 4,264 by 2032. The structure is 50 ft (15.2 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesHWY Gardner ST
CrossesRR MBTA
Location.8 KM NW of JCTSR109&RT1
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.28042, -71.17705
Functional classUrban Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.3 US tons
Inventory rating43.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span45 ft (13.8 m)
Deck width33 ft (10.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2023)
Projected traffic4,264 by 2032
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

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$2.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Gardner ST over RR MBTA built?

It was built in 1906, making it 119 years old in 2025. It was reconstructed in 1997.

What condition is HWY Gardner ST over RR MBTA 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 July 2023.

How much traffic does HWY Gardner ST over RR MBTA carry?

About 1,400 vehicles per day (2023 count).

How long is HWY Gardner ST over RR MBTA?

The structure is 50 ft (15.2 m) long with a longest span of 45 ft (13.8 m) and a deck 33 ft wide.

Who owns HWY Gardner ST over RR MBTA?

It is owned by the State Highway Agency.