US Bridges

RTE 12 over Mill Creek

Fair

Lewis County, New York · .5 MI W of Lowville · Structure no. 000000001009610

Built
1975
50 years old, rebuilt 1987
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
225 ft
1 main span
Daily traffic
3,798
2016 count
Owner
State
State Highway Agency

About this bridge

RTE 12 over Mill Creek is a steel stringer/multi-beam or girder carrying RTE 12 over Mill Creek in Lewis County, New York. It was built in 1975 and reconstructed in 1987, so it is 50 years old, younger than the New York average of 53 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 3,798 vehicles a day, roughly 15% of them trucks, projected to reach 3,834 by 2041. The structure is 225 ft (68.6 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRTE 12
CrossesMill Creek
Location.5 MI W of Lowville
RouteState Highway 12
CountyLewis County
StateNew York
Coordinates43.78738, -75.50651
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span220 ft (67.1 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,798 (2016)
Projected traffic3,834 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$3.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 12 over Mill Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1987.

What condition is RTE 12 over Mill Creek 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 October 2023.

How much traffic does RTE 12 over Mill Creek carry?

About 3,798 vehicles per day (2016 count), of which roughly 15% are trucks.

How long is RTE 12 over Mill Creek?

The structure is 225 ft (68.6 m) long with a longest span of 220 ft (67.1 m) and a deck 42 ft wide.

Who owns RTE 12 over Mill Creek?

It is owned by the State Highway Agency.