US Bridges

South Main Street over Blackledge River

Fair

Hartford County, Connecticut · .25MI S of Exit 15 Rt 2WB · Structure no. 05590

Built
1920
105 years old, rebuilt 1986
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
1,200
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

South Main Street over Blackledge River is a prestressed concrete slab carrying South Main Street over Blackledge River in Hartford County, Connecticut. It was built in 1920 and reconstructed in 1986, so it is 105 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 1,200 vehicles a day, roughly 2% of them trucks, projected to reach 1,783 by 2041. The structure is 38 ft (11.6 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSouth Main Street
CrossesBlackledge River
Location.25MI S of Exit 15 Rt 2WB
RouteCity Street 0
Coordinates41.6068, -72.42603
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span35 ft (10.7 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2021)
Projected traffic1,783 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was South Main Street over Blackledge River built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1986.

What condition is South Main Street over Blackledge 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 May 2023.

How much traffic does South Main Street over Blackledge River carry?

About 1,200 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is South Main Street over Blackledge River?

The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.7 m) and a deck 25 ft wide.

Who owns South Main Street over Blackledge River?

It is owned by the Town or Township Highway Agency.