US Bridges

ST113 /ST3A/KENDLL over RR Bmrr

Fair

Middlesex County, Massachusetts · At Tyngsborough Bridge · Structure no. T090022EMDOTNBI

Built
1930
95 years old, rebuilt 2012
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
67 ft
1 main span
Daily traffic
42,000
2025 count
Owner
State
State Highway Agency

About this bridge

ST113 /ST3A/KENDLL over RR Bmrr is a steel stringer/multi-beam or girder carrying ST113 /ST3A/KENDLL over RR Bmrr in Middlesex County, Massachusetts. It was built in 1930 and reconstructed in 2012, so it is 95 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 42,000 vehicles a day, roughly 3% of them trucks, projected to reach 16,741 by 2033. The structure is 67 ft (20.4 m) long and 42 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesST113 /ST3A/KENDLL
CrossesRR Bmrr
LocationAt Tyngsborough Bridge
RouteState Highway 113
CountyMiddlesex County
StateMassachusetts
Coordinates42.67621, -71.42237
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating52.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span59 ft (18 m)
Deck width42 ft (12.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,000 (2025)
Projected traffic16,741 by 2033
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST113 /ST3A/KENDLL over RR Bmrr built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2012.

What condition is ST113 /ST3A/KENDLL over RR Bmrr 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 2025.

How much traffic does ST113 /ST3A/KENDLL over RR Bmrr carry?

About 42,000 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is ST113 /ST3A/KENDLL over RR Bmrr?

The structure is 67 ft (20.4 m) long with a longest span of 59 ft (18 m) and a deck 42 ft wide.

Who owns ST113 /ST3A/KENDLL over RR Bmrr?

It is owned by the State Highway Agency.