US Bridges

Frontage Rd-S 205 over Camp Creek

Fair

Gallatin County, Montana · 2M SE Manhattan · Structure no. S00205012+08751

Built
1920
105 years old, rebuilt 1934
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete
Length
43 ft
1 main span
Daily traffic
2,274
2023 count
Owner
State
State Highway Agency

About this bridge

Frontage Rd-S 205 over Camp Creek is a concrete tee beam carrying Frontage Rd-S 205 over Camp Creek in Gallatin County, Montana. It was built in 1920 and reconstructed in 1934, so it is 105 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 2,274 vehicles a day, roughly 1% of them trucks, projected to reach 2,388 by 2043. The structure is 43 ft (13 m) long and 31 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesFrontage Rd-S 205
CrossesCamp Creek
Location2M SE Manhattan
RouteState Highway 205
CountyGallatin County
StateMontana
Coordinates45.8394, -111.29894
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckOther
Main spans1
Design loadH 15
Structure length43 ft (13 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,274 (2023)
Projected traffic2,388 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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$120,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Frontage Rd-S 205 over Camp Creek built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1934.

What condition is Frontage Rd-S 205 over Camp 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 April 2024.

How much traffic does Frontage Rd-S 205 over Camp Creek carry?

About 2,274 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Frontage Rd-S 205 over Camp Creek?

The structure is 43 ft (13 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns Frontage Rd-S 205 over Camp Creek?

It is owned by the State Highway Agency.