US Bridges

HWY Chapman ST over RR Amtrak/Mbta

Good

Norfolk County, Massachusetts · .32 Km.Ne of Neponset ST · Structure no. C02009370DOT634

Built
1986
39 years old
Condition
Good
inspected November 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
123 ft
1 main span
Daily traffic
15,000
2019 count
Owner
State
State Highway Agency

About this bridge

HWY Chapman ST over RR Amtrak/Mbta is a steel stringer/multi-beam or girder carrying HWY Chapman ST over RR Amtrak/Mbta in Norfolk County, Massachusetts. It was built in 1986, so it is 39 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,000 vehicles a day, roughly 3% of them trucks, projected to reach 21,794 by 2032. The structure is 123 ft (37.5 m) long and 58 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHWY Chapman ST
CrossesRR Amtrak/Mbta
Location.32 Km.Ne of Neponset ST
RouteCity Street 0
CountyNorfolk County
StateMassachusetts
Coordinates42.16661, -71.1541
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2021
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating78.3 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length123 ft (37.5 m)
Longest span115 ft (35.2 m)
Deck width58 ft (17.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2019)
Projected traffic21,794 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Chapman ST over RR Amtrak/Mbta built?

It was built in 1986, making it 39 years old in 2025.

What condition is HWY Chapman ST over RR Amtrak/Mbta in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2021.

How much traffic does HWY Chapman ST over RR Amtrak/Mbta carry?

About 15,000 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is HWY Chapman ST over RR Amtrak/Mbta?

The structure is 123 ft (37.5 m) long with a longest span of 115 ft (35.2 m) and a deck 58 ft wide.

Who owns HWY Chapman ST over RR Amtrak/Mbta?

It is owned by the State Highway Agency.