US Bridges

RTE 20 over Ninemile Creek

Fair

Onondaga County, New York · 0.2 MI E JCT Rts 20 + 174 · Structure no. 000000001015750

Built
1971
54 years old
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
35 ft
2 main spans
Daily traffic
3,752
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 20 over Ninemile Creek is a steel culvert carrying RTE 20 over Ninemile Creek in Onondaga County, New York. It was built in 1971, so it is 54 years old, older 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 3,752 vehicles a day, roughly 14% of them trucks, projected to reach 3,879 by 2041. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRTE 20
CrossesNinemile Creek
Location0.2 MI E JCT Rts 20 + 174
RouteU.S. Route 20
CountyOnondaga County
StateNew York
Coordinates42.931, -76.3313
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span17 ft (5.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,752 (2021)
Projected traffic3,879 by 2041
Trucks14%
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$644,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 20 over Ninemile Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is RTE 20 over Ninemile 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 August 2023.

How much traffic does RTE 20 over Ninemile Creek carry?

About 3,752 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is RTE 20 over Ninemile Creek?

The structure is 35 ft (10.7 m) long with a longest span of 17 ft (5.1 m).

Who owns RTE 20 over Ninemile Creek?

It is owned by the State Highway Agency.