US Bridges

Thronebrook Drive over Higley Brook

Good

Hartford County, Connecticut · JCT of Higley RD · Structure no. 06196

Built
1990
35 years old
Condition
Good
inspected November 2023
Type
Arch - Deck
Steel
Length
20 ft
1 main span
Daily traffic
61
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Thronebrook Drive over Higley Brook is a steel arch - deck carrying Thronebrook Drive over Higley Brook in Hartford County, Connecticut. It was built in 1990, so it is 35 years old, younger than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 61 vehicles a day, projected to reach 91 by 2043. The structure is 20 ft (6.1 m) long and 84 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesThronebrook Drive
CrossesHigley Brook
LocationJCT of Higley RD
RouteCity Street 0
CountyHartford County
StateConnecticut
Coordinates41.96178, -72.85308
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width84 ft (25.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61 (2023)
Projected traffic91 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Thronebrook Drive over Higley Brook built?

It was built in 1990, making it 35 years old in 2025.

What condition is Thronebrook Drive over Higley Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Thronebrook Drive over Higley Brook carry?

About 61 vehicles per day (2023 count).

How long is Thronebrook Drive over Higley Brook?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 84 ft wide.

Who owns Thronebrook Drive over Higley Brook?

It is owned by the Town or Township Highway Agency.