US Bridges

Mill Street over Dryden Lake Outlt

Poor

Tompkins County, New York · .4 MI SW of Dryden · Structure no. 000000003210300

Built
1930
95 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
412
2019 count
Owner
County
County Highway Agency

About this bridge

Mill Street over Dryden Lake Outlt is a steel stringer/multi-beam or girder carrying Mill Street over Dryden Lake Outlt in Tompkins County, New York. It was built in 1930, so it is 95 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 412 vehicles a day, roughly 9% of them trucks, projected to reach 577 by 2039. The structure is 30 ft (9.1 m) long and 22 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMill Street
CrossesDryden Lake Outlt
Location.4 MI SW of Dryden
Coordinates42.48663, -76.30269
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41 US tons
Inventory rating25 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic412 (2019)
Projected traffic577 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$335,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill Street over Dryden Lake Outlt built?

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

What condition is Mill Street over Dryden Lake Outlt in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Mill Street over Dryden Lake Outlt carry?

About 412 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is Mill Street over Dryden Lake Outlt?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 22 ft wide.

Who owns Mill Street over Dryden Lake Outlt?

It is owned by the County Highway Agency.