US Bridges

Story Mill RD over Bridger Creek 088

Fair

Gallatin County, Montana · 2M N Bozeman · Structure no. L16025000+05001

Built
1978
47 years old
Condition
Fair
inspected August 2023
Type
Channel Beam
Concrete
Length
42 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Story Mill RD over Bridger Creek 088 is a concrete channel beam carrying Story Mill RD over Bridger Creek 088 in Gallatin County, Montana. It was built in 1978, so it is 47 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 42 ft (12.8 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesStory Mill RD
CrossesBridger Creek 088
Location2M N Bozeman
RouteCounty Highway 16025
StateMontana
Coordinates45.70842, -111.02127
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.9 US tons
Inventory rating26.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length42 ft (12.8 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 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 closed6.2 mi (10 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 Story Mill RD over Bridger Creek 088 built?

It was built in 1978, making it 47 years old in 2025.

What condition is Story Mill RD over Bridger Creek 088 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 August 2023.

How much traffic does Story Mill RD over Bridger Creek 088 carry?

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

How long is Story Mill RD over Bridger Creek 088?

The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns Story Mill RD over Bridger Creek 088?

It is owned by the County Highway Agency.