US Bridges

Csah 21 over I 35E

Fair

Ramsey County, Minnesota · 0.9 MI N of JCT TH 36 · Structure no. 62896

Built
1987
38 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
199 ft
2 main spans
Daily traffic
13,200
2020 count
Owner
State
State Highway Agency

About this bridge

Csah 21 over I 35E is a steel continuous stringer/multi-beam or girder carrying Csah 21 over I 35E in Ramsey County, Minnesota. It was built in 1987, so it is 38 years old, younger 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 13,200 vehicles a day, projected to reach 13,000 by 2040. The structure is 199 ft (60.6 m) long and 84 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCsah 21
CrossesI 35E
Location0.9 MI N of JCT TH 36
RouteCounty Highway 21
CountyRamsey County
StateMinnesota
Coordinates45.0229, -93.08973
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
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 rating81 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length199 ft (60.6 m)
Longest span97 ft (29.6 m)
Deck width84 ft (25.7 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,200 (2020)
Projected traffic13,000 by 2040
Trucks—
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Csah 21 over I 35E built?

It was built in 1987, making it 38 years old in 2025.

What condition is Csah 21 over I 35E 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 May 2024.

How much traffic does Csah 21 over I 35E carry?

About 13,200 vehicles per day (2020 count).

How long is Csah 21 over I 35E?

The structure is 199 ft (60.6 m) long with a longest span of 97 ft (29.6 m) and a deck 84 ft wide.

Who owns Csah 21 over I 35E?

It is owned by the State Highway Agency.