US Bridges

CR 129 over CO Ditch # 20

FairPosted for load

Marshall County, Minnesota · 2.0 MI W of JCT CR 130 · Structure no. 45507

Built
1964
61 years old
Condition
Fair
inspected October 2023
Type
Channel Beam
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
35
2018 count
Owner
County
County Highway Agency

About this bridge

CR 129 over CO Ditch # 20 is a prestressed concrete channel beam carrying CR 129 over CO Ditch # 20 in Marshall County, Minnesota. It was built in 1964, so it is 61 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 35 vehicles a day, projected to reach 30 by 2038. The structure is 31 ft (9.4 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesCR 129
CrossesCO Ditch # 20
Location2.0 MI W of JCT CR 130
RouteCounty Highway 129
CountyMarshall County
StateMinnesota
Coordinates48.22232, -95.89567
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating12.9 US tons
Inventory rating10 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2018)
Projected traffic30 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$55 million
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 129 over CO Ditch # 20 built?

It was built in 1964, making it 61 years old in 2025.

What condition is CR 129 over CO Ditch # 20 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 CR 129 over CO Ditch # 20 carry?

About 35 vehicles per day (2018 count).

How long is CR 129 over CO Ditch # 20?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 32 ft wide.

Who owns CR 129 over CO Ditch # 20?

It is owned by the County Highway Agency.