US Bridges

Story Hill RD over Rocky Creek

Fair

Gallatin County, Montana · 2M E Bozeman · Structure no. L16008000+02001

Built
2005
20 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Story Hill RD over Rocky Creek is a concrete slab carrying Story Hill RD over Rocky Creek in Gallatin County, Montana. It was built in 2005, so it is 20 years old, younger 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 26 ft (7.8 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesStory Hill RD
CrossesRocky Creek
Location2M E Bozeman
RouteCounty Highway 16008
StateMontana
Coordinates45.67228, -110.98072
Functional classUrban 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 protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.6 US tons
Inventory rating64.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length26 ft (7.8 m)
Longest span24 ft (7.3 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$28,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Story Hill RD over Rocky Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Story Hill RD over Rocky 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 June 2024.

How much traffic does Story Hill RD over Rocky Creek carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Story Hill RD over Rocky Creek?

The structure is 26 ft (7.8 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns Story Hill RD over Rocky Creek?

It is owned by the County Highway Agency.