US Bridges

Csah 73 over I 494; Ramps

Fair

Dakota County, Minnesota · 0.2 MI W of JCT TH 52 · Structure no. 19854

Built
1985
40 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
489 ft
4 main spans
Daily traffic
7,800
2018 count
Owner
State
State Highway Agency

About this bridge

Csah 73 over I 494; Ramps is a steel continuous stringer/multi-beam or girder carrying Csah 73 over I 494; Ramps in Dakota County, Minnesota. It was built in 1985, so it is 40 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 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 7,800 vehicles a day, projected to reach 7,600 by 2038. The structure is 489 ft (149 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCsah 73
CrossesI 494; Ramps
Location0.2 MI W of JCT TH 52
RouteCounty Highway 73
CountyDakota County
StateMinnesota
Coordinates44.87482, -93.06458
Functional classUrban Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.5 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length489 ft (149 m)
Longest span150 ft (45.7 m)
Deck width66 ft (20.1 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,800 (2018)
Projected traffic7,600 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Csah 73 over I 494; Ramps built?

It was built in 1985, making it 40 years old in 2025.

What condition is Csah 73 over I 494; Ramps 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 September 2023.

How much traffic does Csah 73 over I 494; Ramps carry?

About 7,800 vehicles per day (2018 count).

How long is Csah 73 over I 494; Ramps?

The structure is 489 ft (149 m) long with a longest span of 150 ft (45.7 m) and a deck 66 ft wide.

Who owns Csah 73 over I 494; Ramps?

It is owned by the State Highway Agency.