US Bridges

Csah 4 over Straight River (jd # 2)

Good

Steele County, Minnesota · 0.6 MI E of JCT TH 35 · Structure no. 74531

Built
1979
46 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
180 ft
4 main spans
Daily traffic
870
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 4 over Straight River (jd # 2) is a prestressed concrete slab carrying Csah 4 over Straight River (jd # 2) in Steele County, Minnesota. It was built in 1979, so it is 46 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 870 vehicles a day, projected to reach 1,050 by 2039. The structure is 180 ft (54.9 m) long and 40 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesCsah 4
CrossesStraight River (jd # 2)
Location0.6 MI E of JCT TH 35
RouteCounty Highway 4
Coordinates43.9572, -93.25091
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span45 ft (13.7 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic870 (2019)
Projected traffic1,050 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 4 over Straight River (jd # 2) built?

It was built in 1979, making it 46 years old in 2025.

What condition is Csah 4 over Straight River (jd # 2) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Csah 4 over Straight River (jd # 2) carry?

About 870 vehicles per day (2019 count).

How long is Csah 4 over Straight River (jd # 2)?

The structure is 180 ft (54.9 m) long with a longest span of 45 ft (13.7 m) and a deck 40 ft wide.

Who owns Csah 4 over Straight River (jd # 2)?

It is owned by the County Highway Agency.