US Bridges

S9783;LOCUST Grove over Eight Mile Lateral

Fair

Ada County, Idaho · In Boise · Structure no. 000000000026133

Built
2000
25 years old
Condition
Fair
inspected March 2023
Type
Frame
Concrete
Length
36 ft
1 main span
Daily traffic
12,000
2023 count
Owner
County
County Highway Agency

About this bridge

S9783;LOCUST Grove over Eight Mile Lateral is a concrete frame carrying S9783;LOCUST Grove over Eight Mile Lateral in Ada County, Idaho. It was built in 2000, so it is 25 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 12,000 vehicles a day, roughly 3% of them trucks, projected to reach 18,000 by 2042. The structure is 36 ft (11 m) long and 108 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS9783;LOCUST Grove
CrossesEight Mile Lateral
LocationIn Boise
RouteCity Street 9783
CountyAda County
StateIdaho
Coordinates43.57894, -116.37461
Functional classUrban Minor Arterial

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span36 ft (11 m)
Deck width108 ft (32.9 m)
Roadway width75 ft (23 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2023)
Projected traffic18,000 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 S9783;LOCUST Grove over Eight Mile Lateral built?

It was built in 2000, making it 25 years old in 2025.

What condition is S9783;LOCUST Grove over Eight Mile Lateral 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 March 2023.

How much traffic does S9783;LOCUST Grove over Eight Mile Lateral carry?

About 12,000 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is S9783;LOCUST Grove over Eight Mile Lateral?

The structure is 36 ft (11 m) long with a longest span of 36 ft (11 m) and a deck 108 ft wide.

Who owns S9783;LOCUST Grove over Eight Mile Lateral?

It is owned by the County Highway Agency.