US Bridges

Csah 15 over Battle River

Fair

Koochiching County, Minnesota · 0.5 MI N of JCT TH 1 · Structure no. 36511

Built
1969
56 years old
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
24 ft
1 main span
Daily traffic
36
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 15 over Battle River is a wood or timber slab carrying Csah 15 over Battle River in Koochiching County, Minnesota. It was built in 1969, so it is 56 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 36 vehicles a day, projected to reach 30 by 2041. The structure is 24 ft (7.3 m) long and 34 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesCsah 15
CrossesBattle River
Location0.5 MI N of JCT TH 1
RouteCounty Highway 15
CountyKoochiching County
StateMinnesota
Coordinates47.87676, -94.375
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating68.3 US tons
Inventory rating49.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width34 ft (10.5 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36 (2021)
Projected traffic30 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 15 over Battle River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Csah 15 over Battle 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 September 2024.

How much traffic does Csah 15 over Battle River carry?

About 36 vehicles per day (2021 count).

How long is Csah 15 over Battle River?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 34 ft wide.

Who owns Csah 15 over Battle River?

It is owned by the County Highway Agency.