US Bridges

South Park Avenue over Mill River

Good

Fairfield County, Connecticut · 150 Ft W of Buck Hill RD · Structure no. 04211

Built
2020
5 years old
Condition
Good
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
2,240
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

South Park Avenue over Mill River is a prestressed concrete tee beam carrying South Park Avenue over Mill River in Fairfield County, Connecticut. It was built in 2020, so it is 5 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 2,240 vehicles a day, roughly 4% of them trucks, projected to reach 3,328 by 2044. The structure is 58 ft (17.6 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSouth Park Avenue
CrossesMill River
Location150 Ft W of Buck Hill RD
RouteCity Street 0
Coordinates41.24113, -73.25391
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.5 US tons
Inventory rating41.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length58 ft (17.6 m)
Longest span53 ft (16.1 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,240 (2024)
Projected traffic3,328 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was South Park Avenue over Mill River built?

It was built in 2020, making it 5 years old in 2025.

What condition is South Park Avenue over Mill 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 March 2024.

How much traffic does South Park Avenue over Mill River carry?

About 2,240 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is South Park Avenue over Mill River?

The structure is 58 ft (17.6 m) long with a longest span of 53 ft (16.1 m) and a deck 40 ft wide.

Who owns South Park Avenue over Mill River?

It is owned by the Town or Township Highway Agency.