US Bridges

87th ST SW over Spring Creek

Fair

Bowman County, North Dakota · 3 West 1 South of Bowman · Structure no. 000000006129080

Built
1965
60 years old, rebuilt 1997
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
50
2019 count
Owner
County
County Highway Agency

About this bridge

87th ST SW over Spring Creek is a prestressed concrete tee beam carrying 87th ST SW over Spring Creek in Bowman County, North Dakota. It was built in 1965 and reconstructed in 1997, so it is 60 years old, older than the North Dakota average of 48.2 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 50 vehicles a day, projected to reach 50 by 2039. The structure is 29 ft (8.8 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries87th ST SW
CrossesSpring Creek
Location3 West 1 South of Bowman
RouteCounty Highway 0
CountyBowman County
StateNorth Dakota
Coordinates46.1623, -103.46552
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72 US tons
Inventory rating43.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2019)
Projected traffic50 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 87th ST SW over Spring Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1997.

What condition is 87th ST SW over Spring Creek 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 87th ST SW over Spring Creek carry?

About 50 vehicles per day (2019 count).

How long is 87th ST SW over Spring Creek?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 24 ft wide.

Who owns 87th ST SW over Spring Creek?

It is owned by the County Highway Agency.