US Bridges

ST 9 Ramp E over ST 9 EB

Fair

Middlesex County, Massachusetts · .3 Miles West of I-90 · Structure no. F07068A4KDOTNBI

Built
1989
36 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
332 ft
3 main spans
Daily traffic
2,700
2014 count
Owner
State
State Highway Agency

About this bridge

ST 9 Ramp E over ST 9 EB is a steel continuous stringer/multi-beam or girder carrying ST 9 Ramp E over ST 9 EB in Middlesex County, Massachusetts. It was built in 1989, so it is 36 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 2,700 vehicles a day, roughly 6% of them trucks, projected to reach 4,264 by 2033. The structure is 332 ft (101.2 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 9 Ramp E
CrossesST 9 EB
Location.3 Miles West of I-90
RouteState Highway 9
CountyMiddlesex County
StateMassachusetts
Coordinates42.29714, -71.48637
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating55.3 US tons
Inventory rating33.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length332 ft (101.2 m)
Longest span119 ft (36.3 m)
Deck width30 ft (9 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2014)
Projected traffic4,264 by 2033
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$8.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 9 Ramp E over ST 9 EB built?

It was built in 1989, making it 36 years old in 2025.

What condition is ST 9 Ramp E over ST 9 EB 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 January 2024.

How much traffic does ST 9 Ramp E over ST 9 EB carry?

About 2,700 vehicles per day (2014 count), of which roughly 6% are trucks.

How long is ST 9 Ramp E over ST 9 EB?

The structure is 332 ft (101.2 m) long with a longest span of 119 ft (36.3 m) and a deck 30 ft wide.

Who owns ST 9 Ramp E over ST 9 EB?

It is owned by the State Highway Agency.