US Bridges

Route 137 over Rippowam River

Good

Fairfield County, Connecticut · 0.1 MI North of Route 15 · Structure no. 01350

Built
2023
2 years old
Condition
Good
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
14,900
2020 count
Owner
State
State Highway Agency

About this bridge

Route 137 over Rippowam River is a prestressed concrete tee beam carrying Route 137 over Rippowam River in Fairfield County, Connecticut. It was built in 2023, so it is 2 years old, younger than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,900 vehicles a day, roughly 6% of them trucks, projected to reach 22,140 by 2040. The structure is 73 ft (22.1 m) long and 73 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 137
CrossesRippowam River
Location0.1 MI North of Route 15
RouteState Highway 137
Coordinates41.11294, -73.54619
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating52.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length73 ft (22.1 m)
Longest span67 ft (20.3 m)
Deck width73 ft (22.4 m)
Roadway width65 ft (19.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,900 (2020)
Projected traffic22,140 by 2040
Trucks6%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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$4.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 137 over Rippowam River built?

It was built in 2023, making it 2 years old in 2025.

What condition is Route 137 over Rippowam River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does Route 137 over Rippowam River carry?

About 14,900 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Route 137 over Rippowam River?

The structure is 73 ft (22.1 m) long with a longest span of 67 ft (20.3 m) and a deck 73 ft wide.

Who owns Route 137 over Rippowam River?

It is owned by the State Highway Agency.