US Bridges

Route 320 (ruby RD over INTERSTATE-84

Fair

Tolland County, Connecticut · INTERSTATE-84 Exit 71 · Structure no. 04286

Built
1978
47 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
269 ft
2 main spans
Daily traffic
4,200
2023 count
Owner
State
State Highway Agency

About this bridge

Route 320 (ruby RD over INTERSTATE-84 is a steel continuous stringer/multi-beam or girder carrying Route 320 (ruby RD over INTERSTATE-84 in Tolland County, Connecticut. It was built in 1978, so it is 47 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 5 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 4,200 vehicles a day, roughly 10% of them trucks, projected to reach 6,241 by 2043. The structure is 269 ft (82 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRoute 320 (ruby RD
CrossesINTERSTATE-84
LocationINTERSTATE-84 Exit 71
RouteState Highway 320
CountyTolland County
StateConnecticut
Coordinates41.9228, -72.26024
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length269 ft (82 m)
Longest span135 ft (41.1 m)
Deck width53 ft (16.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2023)
Projected traffic6,241 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 320 (ruby RD over INTERSTATE-84 built?

It was built in 1978, making it 47 years old in 2025.

What condition is Route 320 (ruby RD over INTERSTATE-84 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 September 2024.

How much traffic does Route 320 (ruby RD over INTERSTATE-84 carry?

About 4,200 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Route 320 (ruby RD over INTERSTATE-84?

The structure is 269 ft (82 m) long with a longest span of 135 ft (41.1 m) and a deck 53 ft wide.

Who owns Route 320 (ruby RD over INTERSTATE-84?

It is owned by the State Highway Agency.