US Bridges

Route 176 over Mill Brook

Fair

Hartford County, Connecticut · 0.2 MI No of Stoddard Ave · Structure no. 05875

Built
1990
35 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
8,200
2021 count
Owner
State
State Highway Agency

About this bridge

Route 176 over Mill Brook is a concrete culvert carrying Route 176 over Mill Brook in Hartford County, Connecticut. It was built in 1990, so it is 35 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 8,200 vehicles a day, roughly 4% of them trucks, projected to reach 12,184 by 2041. The structure is 26 ft (7.9 m) long and 61 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRoute 176
CrossesMill Brook
Location0.2 MI No of Stoddard Ave
RouteState Highway 176
Coordinates41.71341, -72.72453
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width61 ft (18.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,200 (2021)
Projected traffic12,184 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 176 over Mill Brook built?

It was built in 1990, making it 35 years old in 2025.

What condition is Route 176 over Mill Brook 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 July 2024.

How much traffic does Route 176 over Mill Brook carry?

About 8,200 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Route 176 over Mill Brook?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 61 ft wide.

Who owns Route 176 over Mill Brook?

It is owned by the State Highway Agency.