US Bridges

RTE 9 over RTE 9J AMTRAK Post Road

Fair

Rensselaer County, New York · JCT US 20/US 9 & South ST · Structure no. 000000001005520

Built
1930
95 years old, rebuilt 2019
Condition
Fair
inspected October 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
310 ft
3 main spans
Daily traffic
16,845
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 9 over RTE 9J AMTRAK Post Road is a steel continuous girder and floorbeam system carrying RTE 9 over RTE 9J AMTRAK Post Road in Rensselaer County, New York. It was built in 1930 and reconstructed in 2019, so it is 95 years old, older than the New York average of 53 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 16,845 vehicles a day, roughly 5% of them trucks, projected to reach 16,924 by 2041. The structure is 310 ft (94.5 m) long and 47 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesRTE 9
CrossesRTE 9J AMTRAK Post Road
LocationJCT US 20/US 9 & South ST
RouteU.S. Route 9
CountyRensselaer County
StateNew York
Coordinates42.62925, -73.74321
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length310 ft (94.5 m)
Longest span120 ft (36.5 m)
Deck width47 ft (14.2 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,845 (2020)
Projected traffic16,924 by 2041
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed2.5 mi (4 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$6.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE 9 over RTE 9J AMTRAK Post Road built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2019.

What condition is RTE 9 over RTE 9J AMTRAK Post Road 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 RTE 9 over RTE 9J AMTRAK Post Road carry?

About 16,845 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is RTE 9 over RTE 9J AMTRAK Post Road?

The structure is 310 ft (94.5 m) long with a longest span of 120 ft (36.5 m) and a deck 47 ft wide.

Who owns RTE 9 over RTE 9J AMTRAK Post Road?

It is owned by the State Highway Agency.