US Bridges

Csah 1 over I 94

Fair

Otter Tail County, Minnesota · 5.9 MI NW of JCT TH 59 · Structure no. 9699

Built
1960
65 years old, rebuilt 1989
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
238 ft
4 main spans
Daily traffic
1,150
2019 count
Owner
State
State Highway Agency

About this bridge

Csah 1 over I 94 is a steel continuous stringer/multi-beam or girder carrying Csah 1 over I 94 in Otter Tail County, Minnesota. It was built in 1960 and reconstructed in 1989, so it is 65 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 1,150 vehicles a day, projected to reach 1,050 by 2039. The structure is 238 ft (72.5 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesCsah 1
CrossesI 94
Location5.9 MI NW of JCT TH 59
RouteCounty Highway 1
CountyOtter Tail County
StateMinnesota
Coordinates46.26892, -96.10283
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.7 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length238 ft (72.5 m)
Longest span73 ft (22.2 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2019)
Projected traffic1,050 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 1 over I 94 built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1989.

What condition is Csah 1 over I 94 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 1 over I 94 carry?

About 1,150 vehicles per day (2019 count).

How long is Csah 1 over I 94?

The structure is 238 ft (72.5 m) long with a longest span of 73 ft (22.2 m) and a deck 35 ft wide.

Who owns Csah 1 over I 94?

It is owned by the State Highway Agency.