US Bridges

Stc 3883;ROBIE Crk over Mores Creek

Fair

Boise County, Idaho · 13.6 S. 8.1 W. Idaho City · Structure no. 000000000026666

Built
1997
28 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
93 ft
1 main span
Daily traffic
310
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 3883;ROBIE Crk over Mores Creek is a prestressed concrete tee beam carrying Stc 3883;ROBIE Crk over Mores Creek in Boise County, Idaho. It was built in 1997, so it is 28 years old, younger 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 310 vehicles a day, roughly 19% of them trucks, projected to reach 465 by 2042. The structure is 93 ft (28.3 m) long and 32 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesStc 3883;ROBIE Crk
CrossesMores Creek
Location13.6 S. 8.1 W. Idaho City
RouteCounty Highway 3883
CountyBoise County
StateIdaho
Coordinates43.62878, -115.99003
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 inspectionSeptember 2023
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating71 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length93 ft (28.3 m)
Longest span89 ft (27.1 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic310 (2023)
Projected traffic465 by 2042
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 Stc 3883;ROBIE Crk over Mores Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Stc 3883;ROBIE Crk over Mores 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 Stc 3883;ROBIE Crk over Mores Creek carry?

About 310 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is Stc 3883;ROBIE Crk over Mores Creek?

The structure is 93 ft (28.3 m) long with a longest span of 89 ft (27.1 m) and a deck 32 ft wide.

Who owns Stc 3883;ROBIE Crk over Mores Creek?

It is owned by the County Highway Agency.