US Bridges

Old HWY 10 over Sarpy Creek 014

Good

Treasure County, Montana · 5M E Hysham · Structure no. L52086004+03001

Built
2015
10 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
106 ft
3 main spans
Daily traffic
219
2023 count
Owner
State
State Highway Agency

About this bridge

Old HWY 10 over Sarpy Creek 014 is a prestressed concrete tee beam carrying Old HWY 10 over Sarpy Creek 014 in Treasure County, Montana. It was built in 2015, so it is 10 years old, younger than the Montana average of 47 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 219 vehicles a day, roughly 16% of them trucks, projected to reach 230 by 2043. The structure is 106 ft (32.2 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesOld HWY 10
CrossesSarpy Creek 014
Location5M E Hysham
RouteState Highway 81018
StateMontana
Coordinates46.29364, -107.13741
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length106 ft (32.2 m)
Longest span32 ft (9.8 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic219 (2023)
Projected traffic230 by 2043
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$237,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old HWY 10 over Sarpy Creek 014 built?

It was built in 2015, making it 10 years old in 2025.

What condition is Old HWY 10 over Sarpy Creek 014 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 April 2024.

How much traffic does Old HWY 10 over Sarpy Creek 014 carry?

About 219 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Old HWY 10 over Sarpy Creek 014?

The structure is 106 ft (32.2 m) long with a longest span of 32 ft (9.8 m) and a deck 31 ft wide.

Who owns Old HWY 10 over Sarpy Creek 014?

It is owned by the State Highway Agency.