US Bridges

Route 40 SB over AMTRAK Railroad

Poor

New Haven County, Connecticut · 0.5 Miles N of I-91 · Structure no. 03410

Built
1971
54 years old
Condition
Poor
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
122 ft
3 main spans
Daily traffic
22,200
2022 count
Owner
State
State Highway Agency

About this bridge

Route 40 SB over AMTRAK Railroad is a steel stringer/multi-beam or girder carrying Route 40 SB over AMTRAK Railroad in New Haven County, Connecticut. It was built in 1971, so it is 54 years old, younger than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 22,200 vehicles a day, roughly 8% of them trucks, projected to reach 32,987 by 2042. The structure is 122 ft (37.2 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRoute 40 SB
CrossesAMTRAK Railroad
Location0.5 Miles N of I-91
RouteState Highway 40
CountyNew Haven County
StateConnecticut
Coordinates41.37707, -72.87858
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.9 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span47 ft (14.4 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,200 (2022)
Projected traffic32,987 by 2042
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5.8 million (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 40 SB over AMTRAK Railroad built?

It was built in 1971, making it 54 years old in 2025.

What condition is Route 40 SB over AMTRAK Railroad in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.

How much traffic does Route 40 SB over AMTRAK Railroad carry?

About 22,200 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Route 40 SB over AMTRAK Railroad?

The structure is 122 ft (37.2 m) long with a longest span of 47 ft (14.4 m) and a deck 41 ft wide.

Who owns Route 40 SB over AMTRAK Railroad?

It is owned by the State Highway Agency.