US Bridges

ST 1 A/High ST over RR MBTA

Good

Essex County, Massachusetts · 1.1 MI N Ipswich Center · Structure no. I01007AWGDOT634

Built
2012
13 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
180 ft
3 main spans
Daily traffic
25,200
2017 count
Owner
State
State Highway Agency

About this bridge

ST 1 A/High ST over RR MBTA is a steel continuous stringer/multi-beam or girder carrying ST 1 A/High ST over RR MBTA in Essex County, Massachusetts. It was built in 2012, so it is 13 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 25,200 vehicles a day, roughly 8% of them trucks. The structure is 180 ft (55 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesST 1 A/High ST
CrossesRR MBTA
Location1.1 MI N Ipswich Center
RouteState Highway 10
Coordinates42.68794, -70.84746
Functional classUrban Other Principal Arterial

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 inspectionSeptember 2023
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 rating101.1 US tons
Inventory rating60.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length180 ft (55 m)
Longest span69 ft (21 m)
Deck width58 ft (17.7 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,200 (2017)
Projected traffic—
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 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$526,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 1 A/High ST over RR MBTA built?

It was built in 2012, making it 13 years old in 2025.

What condition is ST 1 A/High ST over RR 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 September 2023.

How much traffic does ST 1 A/High ST over RR MBTA carry?

About 25,200 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is ST 1 A/High ST over RR MBTA?

The structure is 180 ft (55 m) long with a longest span of 69 ft (21 m) and a deck 58 ft wide.

Who owns ST 1 A/High ST over RR MBTA?

It is owned by the State Highway Agency.