US Bridges

Csah 25 over Elk River

FairPosted for load

Benton County, Minnesota · 0.3 MI N of JCT Csah 4 · Structure no. 05517

Built
1972
53 years old
Condition
Fair
inspected November 2023
Type
Slab
Wood or Timber
Length
78 ft
3 main spans
Daily traffic
250
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 25 over Elk River is a wood or timber slab carrying Csah 25 over Elk River in Benton 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. Its operating status is: posted for load restriction.

It carries about 250 vehicles a day, projected to reach 250 by 2039. The structure is 78 ft (23.8 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 25
CrossesElk River
Location0.3 MI N of JCT Csah 4
RouteCounty Highway 25
CountyBenton County
StateMinnesota
Coordinates45.66726, -94.02908
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span26 ft (7.9 m)
Deck width33 ft (10.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2019)
Projected traffic250 by 2039
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 25 over Elk River built?

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

What condition is Csah 25 over Elk 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 November 2023.

How much traffic does Csah 25 over Elk River carry?

About 250 vehicles per day (2019 count).

How long is Csah 25 over Elk River?

The structure is 78 ft (23.8 m) long with a longest span of 26 ft (7.9 m) and a deck 33 ft wide.

Who owns Csah 25 over Elk River?

It is owned by the County Highway Agency.