US Bridges

Route 40 NB over I-91 & TR 806 RTE 40-007

Fair

New Haven County, Connecticut · 0.4 MI N of I-91 NB · Structure no. 03406A

Built
1972
53 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
620 ft
5 main spans
Daily traffic
6,900
2015 count
Owner
State
State Highway Agency

About this bridge

Route 40 NB over I-91 & TR 806 RTE 40-007 is a steel stringer/multi-beam or girder carrying Route 40 NB over I-91 & TR 806 RTE 40-007 in New Haven County, Connecticut. It was built in 1972, so it is 53 years old, younger than the Connecticut average of 56.7 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 6,900 vehicles a day, roughly 6% of them trucks, projected to reach 10,253 by 2035. The structure is 620 ft (189 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRoute 40 NB
CrossesI-91 & TR 806 RTE 40-007
Location0.4 MI N of I-91 NB
RouteState Highway 40
CountyNew Haven County
StateConnecticut
Coordinates41.37671, -72.86825
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 alignment6: Equal to present minimum criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length620 ft (189 m)
Longest span131 ft (39.9 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2015)
Projected traffic10,253 by 2035
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 40 NB over I-91 & TR 806 RTE 40-007 built?

It was built in 1972, making it 53 years old in 2025.

What condition is Route 40 NB over I-91 & TR 806 RTE 40-007 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 March 2023.

How much traffic does Route 40 NB over I-91 & TR 806 RTE 40-007 carry?

About 6,900 vehicles per day (2015 count), of which roughly 6% are trucks.

How long is Route 40 NB over I-91 & TR 806 RTE 40-007?

The structure is 620 ft (189 m) long with a longest span of 131 ft (39.9 m) and a deck 33 ft wide.

Who owns Route 40 NB over I-91 & TR 806 RTE 40-007?

It is owned by the State Highway Agency.