US Bridges

Csah 51 over Ayd Mill Rd; Cp Rail

Fair

Ramsey County, Minnesota · At the JCT Ayd Mill RD · Structure no. 62511

Built
1964
61 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
265 ft
3 main spans
Daily traffic
12,792
2017 count
Owner
County
County Highway Agency

About this bridge

Csah 51 over Ayd Mill Rd; Cp Rail is a steel continuous stringer/multi-beam or girder carrying Csah 51 over Ayd Mill Rd; Cp Rail in Ramsey County, Minnesota. It was built in 1964, so it is 61 years old, older than the Minnesota average of 38.5 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 12,792 vehicles a day, projected to reach 13,025 by 2029. The structure is 265 ft (80.9 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCsah 51
CrossesAyd Mill Rd; Cp Rail
LocationAt the JCT Ayd Mill RD
RouteCounty Highway 51
CountyRamsey County
StateMinnesota
Coordinates44.93184, -93.14658
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.3 US tons
Inventory rating37.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20
Structure length265 ft (80.9 m)
Longest span80 ft (24.4 m)
Deck width59 ft (17.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic12,792 (2017)
Projected traffic13,025 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Csah 51 over Ayd Mill Rd; Cp Rail built?

It was built in 1964, making it 61 years old in 2025.

What condition is Csah 51 over Ayd Mill Rd; Cp Rail 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 Csah 51 over Ayd Mill Rd; Cp Rail carry?

About 12,792 vehicles per day (2017 count).

How long is Csah 51 over Ayd Mill Rd; Cp Rail?

The structure is 265 ft (80.9 m) long with a longest span of 80 ft (24.4 m) and a deck 59 ft wide.

Who owns Csah 51 over Ayd Mill Rd; Cp Rail?

It is owned by the County Highway Agency.