US Bridges

Route 173 over INTERSTATE-84

Fair

Hartford County, Connecticut · 0.2 Mile North of Rte. 71 · Structure no. 01747

Built
1965
60 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
224 ft
2 main spans
Daily traffic
16,800
2021 count
Owner
State
State Highway Agency

About this bridge

Route 173 over INTERSTATE-84 is a steel continuous stringer/multi-beam or girder carrying Route 173 over INTERSTATE-84 in Hartford County, Connecticut. It was built in 1965, so it is 60 years old, older 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 16,800 vehicles a day, roughly 4% of them trucks, projected to reach 24,963 by 2041. The structure is 224 ft (68.3 m) long and 88 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRoute 173
CrossesINTERSTATE-84
Location0.2 Mile North of Rte. 71
RouteState Highway 173
CountyHartford County
StateConnecticut
Coordinates41.73533, -72.743
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.
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 inspectionJanuary 2023
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.8 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length224 ft (68.3 m)
Longest span110 ft (33.4 m)
Deck width88 ft (26.7 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,800 (2021)
Projected traffic24,963 by 2041
Trucks4%
Lanes on structure5
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 173 over INTERSTATE-84 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Route 173 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 Route 173 over INTERSTATE-84 carry?

About 16,800 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Route 173 over INTERSTATE-84?

The structure is 224 ft (68.3 m) long with a longest span of 110 ft (33.4 m) and a deck 88 ft wide.

Who owns Route 173 over INTERSTATE-84?

It is owned by the State Highway Agency.