US Bridges

Mud Mill Road over 81I 81I33033110 RTE I81

Fair

Onondaga County, New York · 3 MI N JCT I81 & SH 31 · Structure no. 000000001031730

Built
1996
29 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
260 ft
2 main spans
Daily traffic
2,163
2019 count
Owner
State
State Highway Agency

About this bridge

Mud Mill Road over 81I 81I33033110 RTE I81 is a steel continuous stringer/multi-beam or girder carrying Mud Mill Road over 81I 81I33033110 RTE I81 in Onondaga County, New York. It was built in 1996, so it is 29 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 2,163 vehicles a day, roughly 7% of them trucks, projected to reach 3,028 by 2039. The structure is 260 ft (79.2 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMud Mill Road
Crosses81I 81I33033110 RTE I81
Location3 MI N JCT I81 & SH 31
RouteCounty Highway 0
CountyOnondaga County
StateNew York
Coordinates43.21706, -76.12989
Functional classUrban Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length260 ft (79.2 m)
Longest span129 ft (39.3 m)
Deck width38 ft (11.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,163 (2019)
Projected traffic3,028 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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$3.3 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mud Mill Road over 81I 81I33033110 RTE I81 built?

It was built in 1996, making it 29 years old in 2025.

What condition is Mud Mill Road over 81I 81I33033110 RTE I81 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 2024.

How much traffic does Mud Mill Road over 81I 81I33033110 RTE I81 carry?

About 2,163 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is Mud Mill Road over 81I 81I33033110 RTE I81?

The structure is 260 ft (79.2 m) long with a longest span of 129 ft (39.3 m) and a deck 38 ft wide.

Who owns Mud Mill Road over 81I 81I33033110 RTE I81?

It is owned by the State Highway Agency.