US Bridges

US 1 Post RD over Seaview RR

Fair

Washington County, Rhode Island · 0.14 MI S of JCT RI403 · Structure no. 000000000010050

Built
2003
22 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
181 ft
3 main spans
Daily traffic
25,771
2015 count
Owner
State
State Highway Agency

About this bridge

US 1 Post RD over Seaview RR is a prestressed concrete continuous box beam or girders - multiple carrying US 1 Post RD over Seaview RR in Washington County, Rhode Island. It was built in 2003, so it is 22 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 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 25,771 vehicles a day, roughly 2% of them trucks, projected to reach 30,926 by 2036. The structure is 181 ft (55.3 m) long and 92 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 1 Post RD
CrossesSeaview RR
Location0.14 MI S of JCT RI403
RouteInterstate 1
CountyWashington County
StateRhode Island
Coordinates41.60261, -71.45461
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating65 US tons
Inventory rating50.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length181 ft (55.3 m)
Longest span59 ft (18 m)
Deck width92 ft (28 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,771 (2015)
Projected traffic30,926 by 2036
Trucks2%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost$7.3 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 1 Post RD over Seaview RR built?

It was built in 2003, making it 22 years old in 2025.

What condition is US 1 Post RD over Seaview RR 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 May 2023.

How much traffic does US 1 Post RD over Seaview RR carry?

About 25,771 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is US 1 Post RD over Seaview RR?

The structure is 181 ft (55.3 m) long with a longest span of 59 ft (18 m) and a deck 92 ft wide.

Who owns US 1 Post RD over Seaview RR?

It is owned by the State Highway Agency.