US Bridges

Route 9 Southbound over Route 148 (west Main St)

Fair

Middlesex County, Connecticut · Route 9 Exit No. 6 · Structure no. 03454

Built
1967
58 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
157 ft
3 main spans
Daily traffic
14,600
2022 count
Owner
State
State Highway Agency

About this bridge

Route 9 Southbound over Route 148 (west Main St) is a prestressed concrete stringer/multi-beam or girder carrying Route 9 Southbound over Route 148 (west Main St) in Middlesex County, Connecticut. It was built in 1967, so it is 58 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 14,600 vehicles a day, roughly 6% of them trucks, projected to reach 21,694 by 2042. The structure is 157 ft (47.9 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRoute 9 Southbound
CrossesRoute 148 (west Main St)
LocationRoute 9 Exit No. 6
RouteState Highway 9
CountyMiddlesex County
StateConnecticut
Coordinates41.39974, -72.4733
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionAugust 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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length157 ft (47.9 m)
Longest span72 ft (21.9 m)
Deck width44 ft (13.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2022)
Projected traffic21,694 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 9 Southbound over Route 148 (west Main St) built?

It was built in 1967, making it 58 years old in 2025.

What condition is Route 9 Southbound over Route 148 (west Main St) 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 August 2024.

How much traffic does Route 9 Southbound over Route 148 (west Main St) carry?

About 14,600 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Route 9 Southbound over Route 148 (west Main St)?

The structure is 157 ft (47.9 m) long with a longest span of 72 ft (21.9 m) and a deck 44 ft wide.

Who owns Route 9 Southbound over Route 148 (west Main St)?

It is owned by the State Highway Agency.