US Bridges

Route 31 over Hockanum River

Fair

Tolland County, Connecticut · 50 South of Route 74 · Structure no. 03238

Built
1995
30 years old
Condition
Fair
inspected March 2023
Type
Slab
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
4,600
2020 count
Owner
State
State Highway Agency

About this bridge

Route 31 over Hockanum River is a prestressed concrete slab carrying Route 31 over Hockanum River in Tolland County, Connecticut. It was built in 1995, so it is 30 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 4,600 vehicles a day, roughly 5% of them trucks, projected to reach 6,835 by 2040. The structure is 41 ft (12.5 m) long and 50 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRoute 31
CrossesHockanum River
Location50 South of Route 74
RouteState Highway 31
CountyTolland County
StateConnecticut
Coordinates41.86667, -72.44167
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51.5 US tons
Inventory rating38.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span39 ft (11.9 m)
Deck width50 ft (15.2 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,600 (2020)
Projected traffic6,835 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 31 over Hockanum River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Route 31 over Hockanum River 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 31 over Hockanum River carry?

About 4,600 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Route 31 over Hockanum River?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.9 m) and a deck 50 ft wide.

Who owns Route 31 over Hockanum River?

It is owned by the State Highway Agency.