US Bridges

Csah 116 over Little Indian Sioux Rvr

Fair

St. Louis County, Minnesota · 3.6 MI W of JCT CR 670 · Structure no. 7774

Built
1955
70 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
53 ft
1 main span
Daily traffic
325
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 116 over Little Indian Sioux Rvr is a steel stringer/multi-beam or girder carrying Csah 116 over Little Indian Sioux Rvr in St. Louis County, Minnesota. It was built in 1955, so it is 70 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 325 vehicles a day, projected to reach 240 by 2039. The structure is 53 ft (16.2 m) long and 27 ft wide. If it were closed, the detour would be 75.2 mi (121 km).

Location

Open in Google Maps
CarriesCsah 116
CrossesLittle Indian Sioux Rvr
Location3.6 MI W of JCT CR 670
RouteCounty Highway 116
CountySt. Louis County
StateMinnesota
Coordinates48.14263, -92.20715
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.9 US tons
Inventory rating33.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span50 ft (15.2 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic325 (2019)
Projected traffic240 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed75.2 mi (121 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$232 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 116 over Little Indian Sioux Rvr built?

It was built in 1955, making it 70 years old in 2025.

What condition is Csah 116 over Little Indian Sioux Rvr 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 June 2023.

How much traffic does Csah 116 over Little Indian Sioux Rvr carry?

About 325 vehicles per day (2019 count).

How long is Csah 116 over Little Indian Sioux Rvr?

The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.

Who owns Csah 116 over Little Indian Sioux Rvr?

It is owned by the County Highway Agency.