US Bridges

NPS Service Road over Upper Divide Creek

Fair

Glacier County, Montana · Just South of Going-To-Th · Structure no. 1430045S0000000

Built
1970
55 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
100 ft
1 main span
Daily traffic
50
2017 count
Owner
Federal
National Park Service

About this bridge

NPS Service Road over Upper Divide Creek is a prestressed concrete tee beam carrying NPS Service Road over Upper Divide Creek in Glacier County, Montana. It was built in 1970, so it is 55 years old, older than the Montana average of 47 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.

It carries about 50 vehicles a day, roughly 1% of them trucks, projected to reach 60 by 2037. The structure is 100 ft (30.5 m) long and 13 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNPS Service Road
CrossesUpper Divide Creek
LocationJust South of Going-To-Th
RouteFederal Lands Road 18200
CountyGlacier County
StateMontana
Coordinates48.74042, -113.42878
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.1 US tons
Inventory rating22.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length100 ft (30.5 m)
Longest span100 ft (30.5 m)
Deck width13 ft (4.1 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2017)
Projected traffic60 by 2037
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$53,000
NavigationNo navigation control on waterway

Frequently asked questions

When was NPS Service Road over Upper Divide Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is NPS Service Road over Upper Divide 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 2023.

How much traffic does NPS Service Road over Upper Divide Creek carry?

About 50 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is NPS Service Road over Upper Divide Creek?

The structure is 100 ft (30.5 m) long with a longest span of 100 ft (30.5 m) and a deck 13 ft wide.

Who owns NPS Service Road over Upper Divide Creek?

It is owned by the National Park Service.