US Bridges

US 1 SB By-Pass over AMTRAK

Fair

Kent County, Rhode Island · 0.5 MI N of JCT Ri 5 · Structure no. 000000000008412

Built
1976
49 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
76 ft
1 main span
Daily traffic
3,434
1993 count
Owner
State
State Highway Agency

About this bridge

US 1 SB By-Pass over AMTRAK is a steel stringer/multi-beam or girder carrying US 1 SB By-Pass over AMTRAK in Kent County, Rhode Island. It was built in 1976, so it is 49 years old, younger than the Rhode Island average of 54.5 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 3,434 vehicles a day, roughly 10% of them trucks, projected to reach 4,121 by 2036. The structure is 76 ft (23.2 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 1 SB By-Pass
CrossesAMTRAK
Location0.5 MI N of JCT Ri 5
RouteU.S. Route 1
CountyKent County
StateRhode Island
Coordinates41.70299, -71.45097
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 inspectionJuly 2023
Inspection intervalevery 12 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 geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.4 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span70 ft (21.3 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,434 (1993)
Projected traffic4,121 by 2036
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 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$1 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 1 SB By-Pass over AMTRAK built?

It was built in 1976, making it 49 years old in 2025.

What condition is US 1 SB By-Pass over AMTRAK 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 July 2023.

How much traffic does US 1 SB By-Pass over AMTRAK carry?

About 3,434 vehicles per day (1993 count), of which roughly 10% are trucks.

How long is US 1 SB By-Pass over AMTRAK?

The structure is 76 ft (23.2 m) long with a longest span of 70 ft (21.3 m) and a deck 44 ft wide.

Who owns US 1 SB By-Pass over AMTRAK?

It is owned by the State Highway Agency.