US Bridges

Csah 29 over Leaf River

FairPosted for load

Wadena County, Minnesota · 0.1 MI N of JCT Csah 5 · Structure no. 80512

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
160 ft
4 main spans
Daily traffic
137
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 29 over Leaf River is a prestressed concrete slab carrying Csah 29 over Leaf River in Wadena County, Minnesota. It was built in 1970, so it is 55 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. Its operating status is: posted for load restriction.

It carries about 137 vehicles a day, projected to reach 100 by 2041. The structure is 160 ft (48.9 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 29
CrossesLeaf River
Location0.1 MI N of JCT Csah 5
RouteCounty Highway 29
CountyWadena County
StateMinnesota
Coordinates46.45667, -94.84148
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
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 rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length160 ft (48.9 m)
Longest span40 ft (12.2 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic137 (2021)
Projected traffic100 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 29 over Leaf River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Csah 29 over Leaf River 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 August 2023.

How much traffic does Csah 29 over Leaf River carry?

About 137 vehicles per day (2021 count).

How long is Csah 29 over Leaf River?

The structure is 160 ft (48.9 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.

Who owns Csah 29 over Leaf River?

It is owned by the County Highway Agency.