US Bridges

Jones Road over Mann Creek

Fair

Washington County, Idaho · 5.5 N. 5.1 E. Weiser · Structure no. 000000000028750

Built
1960
65 years old, rebuilt 1988
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

Jones Road over Mann Creek is a steel stringer/multi-beam or girder carrying Jones Road over Mann Creek in Washington County, Idaho. It was built in 1960 and reconstructed in 1988, so it is 65 years old, older than the Idaho average of 45.3 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 20 vehicles a day, roughly 5% of them trucks, projected to reach 30 by 2039. The structure is 27 ft (8.2 m) long and 19 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesJones Road
CrossesMann Creek
Location5.5 N. 5.1 E. Weiser
RouteCounty Highway 0
StateIdaho
Coordinates44.32173, -116.86552
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length27 ft (8.2 m)
Longest span26 ft (7.9 m)
Deck width19 ft (5.9 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic30 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Jones Road over Mann Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1988.

What condition is Jones Road over Mann 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 July 2024.

How much traffic does Jones Road over Mann Creek carry?

About 20 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Jones Road over Mann Creek?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 19 ft wide.

Who owns Jones Road over Mann Creek?

It is owned by the County Highway Agency.