US Bridges

ST 1 A/Rp 1ANB over Comb SR 14 & Blue L

Good

Suffolk County, Massachusetts · Segment 1 · Structure no. B1659257TMPANBI

Built
2005
20 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
472 ft
3 main spans
Daily traffic
—
Owner
State
State Highway Agency

About this bridge

ST 1 A/Rp 1ANB over Comb SR 14 & Blue L is a prestressed concrete continuous box beam or girders - single or spread carrying ST 1 A/Rp 1ANB over Comb SR 14 & Blue L in Suffolk County, Massachusetts. It was built in 2005, so it is 20 years old, younger than the Massachusetts average of 63.8 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.

No traffic count is recorded. The structure is 472 ft (144 m) long and 28 ft wide.

CarriesST 1 A/Rp 1ANB
CrossesComb SR 14 & Blue L
LocationSegment 1
RouteState Highway 10
Coordinates42.37384, -71.03055
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78.8 US tons
Inventory rating47.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length472 ft (144 m)
Longest span175 ft (53.4 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 1 A/Rp 1ANB over Comb SR 14 & Blue L built?

It was built in 2005, making it 20 years old in 2025.

What condition is ST 1 A/Rp 1ANB over Comb SR 14 & Blue L 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 March 2023.

How much traffic does ST 1 A/Rp 1ANB over Comb SR 14 & Blue L carry?

No traffic count is recorded for this structure.

How long is ST 1 A/Rp 1ANB over Comb SR 14 & Blue L?

The structure is 472 ft (144 m) long with a longest span of 175 ft (53.4 m) and a deck 28 ft wide.

Who owns ST 1 A/Rp 1ANB over Comb SR 14 & Blue L?

It is owned by the State Highway Agency.