US Bridges

ST 99 Nb/Broadway over ST 16 Rev Bch Pkwy

Fair

Middlesex County, Massachusetts · .1 MI W of Lewis ST · Structure no. E120094EBDOTNBI

Built
1956
69 years old, rebuilt 1991
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
2 main spans
Daily traffic
24,000
2025 count
Owner
State
State Highway Agency

About this bridge

ST 99 Nb/Broadway over ST 16 Rev Bch Pkwy is a steel stringer/multi-beam or girder carrying ST 99 Nb/Broadway over ST 16 Rev Bch Pkwy in Middlesex County, Massachusetts. It was built in 1956 and reconstructed in 1991, so it is 69 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 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 24,000 vehicles a day, roughly 11% of them trucks, projected to reach 21,478 by 2032. The structure is 120 ft (36.6 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 99 Nb/Broadway
CrossesST 16 Rev Bch Pkwy
Location.1 MI W of Lewis ST
RouteState Highway 99
CountyMiddlesex County
StateMassachusetts
Coordinates42.40247, -71.05974
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
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 geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating88.8 US tons
Inventory rating53.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length120 ft (36.6 m)
Longest span59 ft (18 m)
Deck width65 ft (19.8 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,000 (2025)
Projected traffic21,478 by 2032
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$7.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 99 Nb/Broadway over ST 16 Rev Bch Pkwy built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1991.

What condition is ST 99 Nb/Broadway over ST 16 Rev Bch Pkwy 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 2025.

How much traffic does ST 99 Nb/Broadway over ST 16 Rev Bch Pkwy carry?

About 24,000 vehicles per day (2025 count), of which roughly 11% are trucks.

How long is ST 99 Nb/Broadway over ST 16 Rev Bch Pkwy?

The structure is 120 ft (36.6 m) long with a longest span of 59 ft (18 m) and a deck 65 ft wide.

Who owns ST 99 Nb/Broadway over ST 16 Rev Bch Pkwy?

It is owned by the State Highway Agency.