US Bridges

Hill Street over Lawyer Creek

Good

Idaho County, Idaho · In Kamiah;hill St. · Structure no. 000000000029350

Built
1972
53 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
1,000
2023 count
Owner
County
County Highway Agency

About this bridge

Hill Street over Lawyer Creek is a prestressed concrete stringer/multi-beam or girder carrying Hill Street over Lawyer Creek in Idaho County, Idaho. It was built in 1972, so it is 53 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,500 by 2039. The structure is 80 ft (24.4 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesHill Street
CrossesLawyer Creek
LocationIn Kamiah;hill St.
RouteCounty Highway 0
StateIdaho
Coordinates46.21814, -116.02936
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span78 ft (23.8 m)
Deck width30 ft (9.1 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,500 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hill Street over Lawyer Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Hill Street over Lawyer Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Hill Street over Lawyer Creek carry?

About 1,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Hill Street over Lawyer Creek?

The structure is 80 ft (24.4 m) long with a longest span of 78 ft (23.8 m) and a deck 30 ft wide.

Who owns Hill Street over Lawyer Creek?

It is owned by the County Highway Agency.