US Bridges

Ut 9223 over Mud Hen Creek

FairPosted for load

St. Louis County, Minnesota · 0.3 MI N of JCT Csah 16 · Structure no. 69587

Built
1988
37 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
5
2003 count
Owner
County
County Highway Agency

About this bridge

Ut 9223 over Mud Hen Creek is a steel stringer/multi-beam or girder carrying Ut 9223 over Mud Hen Creek in St. Louis County, Minnesota. It was built in 1988, so it is 37 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. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, projected to reach 5 by 2029. The structure is 40 ft (12.3 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesUt 9223
CrossesMud Hen Creek
Location0.3 MI N of JCT Csah 16
RouteCounty Highway 9223
CountySt. Louis County
StateMinnesota
Coordinates47.37541, -92.36772
Functional classRural Local

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating32 US tons
Inventory rating19.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 20
Structure length40 ft (12.3 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2003)
Projected traffic5 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ut 9223 over Mud Hen Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Ut 9223 over Mud Hen Creek 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 Ut 9223 over Mud Hen Creek carry?

About 5 vehicles per day (2003 count).

How long is Ut 9223 over Mud Hen Creek?

The structure is 40 ft (12.3 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns Ut 9223 over Mud Hen Creek?

It is owned by the County Highway Agency.