US Bridges

Sma 9793; Main ST over Boise Vrt Center

Good

Ada County, Idaho · Main ST East of 8th ST · Structure no. 000000000034100

Built
2016
9 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
144 ft
4 main spans
Daily traffic
6,000
2023 count
Owner
County
County Highway Agency

About this bridge

Sma 9793; Main ST over Boise Vrt Center is a steel stringer/multi-beam or girder carrying Sma 9793; Main ST over Boise Vrt Center in Ada County, Idaho. It was built in 2016, so it is 9 years old, younger 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 6,000 vehicles a day, projected to reach 9,000 by 2042. The structure is 144 ft (43.9 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSma 9793; Main ST
CrossesBoise Vrt Center
LocationMain ST East of 8th ST
RouteCity Street 9793
CountyAda County
StateIdaho
Coordinates43.61558, -116.20339
Functional classUrban Minor Arterial

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.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.9 US tons
Inventory rating33.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length144 ft (43.9 m)
Longest span144 ft (43.9 m)
Deck width46 ft (13.9 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2023)
Projected traffic9,000 by 2042
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sma 9793; Main ST over Boise Vrt Center built?

It was built in 2016, making it 9 years old in 2025.

What condition is Sma 9793; Main ST over Boise Vrt Center 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 November 2024.

How much traffic does Sma 9793; Main ST over Boise Vrt Center carry?

About 6,000 vehicles per day (2023 count).

How long is Sma 9793; Main ST over Boise Vrt Center?

The structure is 144 ft (43.9 m) long with a longest span of 144 ft (43.9 m) and a deck 46 ft wide.

Who owns Sma 9793; Main ST over Boise Vrt Center?

It is owned by the County Highway Agency.