US Bridges

93rd Ave SW over Timber Creek

FairPosted for load

Hettinger County, North Dakota · 8 South of Mott · Structure no. 000000021129270

Built
1951
74 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
60 ft
2 main spans
Daily traffic
100
2018 count
Owner
County
County Highway Agency

About this bridge

93rd Ave SW over Timber Creek is a concrete continuous tee beam carrying 93rd Ave SW over Timber Creek in Hettinger County, North Dakota. It was built in 1951, so it is 74 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 6 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2038. The structure is 60 ft (18.3 m) long and 22 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Carries93rd Ave SW
CrossesTimber Creek
Location8 South of Mott
RouteCounty Highway 2129
Coordinates46.24971, -102.3102
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.7 US tons
Inventory rating14.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length60 ft (18.3 m)
Longest span28 ft (8.5 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2018)
Projected traffic120 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 93rd Ave SW over Timber Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is 93rd Ave SW over Timber 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 September 2024.

How much traffic does 93rd Ave SW over Timber Creek carry?

About 100 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is 93rd Ave SW over Timber Creek?

The structure is 60 ft (18.3 m) long with a longest span of 28 ft (8.5 m) and a deck 22 ft wide.

Who owns 93rd Ave SW over Timber Creek?

It is owned by the County Highway Agency.