US Bridges

Csah 47 over Morgan Creek

Fair

Blue Earth County, Minnesota · 0.4 MI W of JCT TH 68 · Structure no. 07529

Built
1972
53 years old
Condition
Fair
inspected September 2023
Type
Slab
Prestressed Concrete
Length
111 ft
3 main spans
Daily traffic
154
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 47 over Morgan Creek is a prestressed concrete slab carrying Csah 47 over Morgan Creek in Blue Earth County, Minnesota. It was built in 1972, so it is 53 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 154 vehicles a day, projected to reach 180 by 2041. The structure is 111 ft (33.9 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 47
CrossesMorgan Creek
Location0.4 MI W of JCT TH 68
RouteCounty Highway 47
CountyBlue Earth County
StateMinnesota
Coordinates44.22855, -94.32168
Functional classRural Minor 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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 rating104.9 US tons
Inventory rating62.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length111 ft (33.9 m)
Longest span37 ft (11.3 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic154 (2021)
Projected traffic180 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Csah 47 over Morgan Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Csah 47 over Morgan 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 September 2023.

How much traffic does Csah 47 over Morgan Creek carry?

About 154 vehicles per day (2021 count).

How long is Csah 47 over Morgan Creek?

The structure is 111 ft (33.9 m) long with a longest span of 37 ft (11.3 m) and a deck 38 ft wide.

Who owns Csah 47 over Morgan Creek?

It is owned by the County Highway Agency.