US Bridges

Mountain Spring RD over INTERSTATE-84

Fair

Tolland County, Connecticut · 1.24 MI E of I84 JCT RT31 · Structure no. 04280

Built
1979
46 years old
Condition
Fair
inspected January 2023
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
448 ft
2 main spans
Daily traffic
540
2023 count
Owner
State
State Highway Agency

About this bridge

Mountain Spring RD over INTERSTATE-84 is a steel continuous box beam or girders - single or spread carrying Mountain Spring RD over INTERSTATE-84 in Tolland County, Connecticut. It was built in 1979, so it is 46 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 540 vehicles a day, roughly 7% of them trucks, projected to reach 802 by 2043. The structure is 448 ft (136.4 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMountain Spring RD
CrossesINTERSTATE-84
Location1.24 MI E of I84 JCT RT31
RouteCity Street 0
CountyTolland County
StateConnecticut
Coordinates41.85472, -72.40556
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating62.2 US tons
Inventory rating47.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length448 ft (136.4 m)
Longest span240 ft (73.2 m)
Deck width42 ft (12.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic540 (2023)
Projected traffic802 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 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 Mountain Spring RD over INTERSTATE-84 built?

It was built in 1979, making it 46 years old in 2025.

What condition is Mountain Spring 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 January 2023.

How much traffic does Mountain Spring RD over INTERSTATE-84 carry?

About 540 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Mountain Spring RD over INTERSTATE-84?

The structure is 448 ft (136.4 m) long with a longest span of 240 ft (73.2 m) and a deck 42 ft wide.

Who owns Mountain Spring RD over INTERSTATE-84?

It is owned by the State Highway Agency.