US Bridges

HWY Curtis ST over RR CSX

Fair

Suffolk County, Massachusetts · .16 KM NW of SR 1A · Structure no. B160693HUDOT634

Built
1906
119 years old, rebuilt 1975
Condition
Fair
inspected October 2023
Type
Slab
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
12,413
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Curtis ST over RR CSX is a prestressed concrete slab carrying HWY Curtis ST over RR CSX in Suffolk County, Massachusetts. It was built in 1906 and reconstructed in 1975, 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 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 12,413 vehicles a day, roughly 12% of them trucks, projected to reach 24,479 by 2032. The structure is 50 ft (15.2 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Curtis ST
CrossesRR CSX
Location.16 KM NW of SR 1A
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.38362, -71.02187
Functional classUrban Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating65.5 US tons
Inventory rating35.6 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 width48 ft (14.6 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,413 (2023)
Projected traffic24,479 by 2032
Trucks12%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Curtis ST over RR CSX built?

It was built in 1906, making it 119 years old in 2025. It was reconstructed in 1975.

What condition is HWY Curtis ST over RR CSX 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 October 2023.

How much traffic does HWY Curtis ST over RR CSX carry?

About 12,413 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is HWY Curtis ST over RR CSX?

The structure is 50 ft (15.2 m) long with a longest span of 45 ft (13.8 m) and a deck 48 ft wide.

Who owns HWY Curtis ST over RR CSX?

It is owned by the State Highway Agency.