US Bridges

Irrsr Nd Hiway 49 over Timber Creek

Good

Grant County, North Dakota · 11 North Nd-Sd Border · Structure no. 0049010970

Built
1972
53 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
140 ft
3 main spans
Daily traffic
250
2019 count
Owner
State
State Highway Agency

About this bridge

Irrsr Nd Hiway 49 over Timber Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Irrsr Nd Hiway 49 over Timber Creek in Grant County, North Dakota. It was built in 1972, so it is 53 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 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 250 vehicles a day, roughly 20% of them trucks, projected to reach 286 by 2039. The structure is 140 ft (42.7 m) long and 37 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

CarriesIrrsr Nd Hiway 49
CrossesTimber Creek
Location11 North Nd-Sd Border
RouteState Highway 49
Coordinates46.10294, -101.95723
Functional classRural Minor Arterial

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 inspectionJune 2023
Inspection intervalevery 24 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 alignment6: Equal to present minimum criteria
Operating rating94.2 US tons
Inventory rating56.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span52 ft (15.8 m)
Deck width37 ft (11.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2019)
Projected traffic286 by 2039
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$195,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Irrsr Nd Hiway 49 over Timber Creek built?

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

What condition is Irrsr Nd Hiway 49 over Timber Creek 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 June 2023.

How much traffic does Irrsr Nd Hiway 49 over Timber Creek carry?

About 250 vehicles per day (2019 count), of which roughly 20% are trucks.

How long is Irrsr Nd Hiway 49 over Timber Creek?

The structure is 140 ft (42.7 m) long with a longest span of 52 ft (15.8 m) and a deck 37 ft wide.

Who owns Irrsr Nd Hiway 49 over Timber Creek?

It is owned by the State Highway Agency.