US Bridges

RTE I390 over RTE 21

Fair

Steuben County, New York · JCT Rts 21 + I390 · Structure no. 000000001090722

Built
1975
50 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
119 ft
1 main span
Daily traffic
6,279
2021 count
Owner
State
State Highway Agency

About this bridge

RTE I390 over RTE 21 is a steel stringer/multi-beam or girder carrying RTE I390 over RTE 21 in Steuben County, New York. It was built in 1975, 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 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 6,279 vehicles a day, roughly 32% of them trucks, projected to reach 11,713 by 2041. The structure is 119 ft (36.3 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesRTE I390
CrossesRTE 21
LocationJCT Rts 21 + I390
RouteInterstate 390
CountySteuben County
StateNew York
Coordinates42.542, -77.59259
Functional classRural Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length119 ft (36.3 m)
Longest span116 ft (35.3 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,279 (2021)
Projected traffic11,713 by 2041
Trucks32%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$3.2 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I390 over RTE 21 built?

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

What condition is RTE I390 over RTE 21 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 August 2023.

How much traffic does RTE I390 over RTE 21 carry?

About 6,279 vehicles per day (2021 count), of which roughly 32% are trucks.

How long is RTE I390 over RTE 21?

The structure is 119 ft (36.3 m) long with a longest span of 116 ft (35.3 m) and a deck 44 ft wide.

Who owns RTE I390 over RTE 21?

It is owned by the State Highway Agency.