US Bridges

New Rock Hill Road over INTERSTATE-91

Poor

New Haven County, Connecticut · 1.77 South of Route 68 · Structure no. 03130

Built
1965
60 years old
Condition
Poor
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
288 ft
3 main spans
Daily traffic
950
2022 count
Owner
State
State Highway Agency

About this bridge

New Rock Hill Road over INTERSTATE-91 is a steel stringer/multi-beam or girder carrying New Rock Hill Road over INTERSTATE-91 in New Haven County, Connecticut. It was built in 1965, so it is 60 years old, older 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 950 vehicles a day, roughly 5% of them trucks, projected to reach 1,412 by 2042. The structure is 288 ft (87.7 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNew Rock Hill Road
CrossesINTERSTATE-91
Location1.77 South of Route 68
RouteCity Street 0
CountyNew Haven County
StateConnecticut
Coordinates41.45481, -72.78078
Functional classUrban Minor Arterial

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
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
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 rating62.2 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length288 ft (87.7 m)
Longest span107 ft (32.7 m)
Deck width40 ft (12.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2022)
Projected traffic1,412 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was New Rock Hill Road over INTERSTATE-91 built?

It was built in 1965, making it 60 years old in 2025.

What condition is New Rock Hill Road over INTERSTATE-91 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 June 2023.

How much traffic does New Rock Hill Road over INTERSTATE-91 carry?

About 950 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is New Rock Hill Road over INTERSTATE-91?

The structure is 288 ft (87.7 m) long with a longest span of 107 ft (32.7 m) and a deck 40 ft wide.

Who owns New Rock Hill Road over INTERSTATE-91?

It is owned by the State Highway Agency.