US Bridges

Stc 3767;MUNGER RD over Middleton Canal

Good

Ada County, Idaho · 1.1 N. 0.6 W. Star · Structure no. 000000000025980

Built
1965
60 years old
Condition
Good
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
3,600
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 3767;MUNGER RD over Middleton Canal is a prestressed concrete tee beam carrying Stc 3767;MUNGER RD over Middleton Canal in Ada County, Idaho. It was built in 1965, so it is 60 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 3,600 vehicles a day, projected to reach 5,400 by 2042. The structure is 27 ft (8.2 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesStc 3767;MUNGER RD
CrossesMiddleton Canal
Location1.1 N. 0.6 W. Star
RouteCounty Highway 3767
StateIdaho
Coordinates43.70739, -116.50328
Functional classRural Major Collector

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span26 ft (7.9 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2023)
Projected traffic5,400 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 3767;MUNGER RD over Middleton Canal built?

It was built in 1965, making it 60 years old in 2025.

What condition is Stc 3767;MUNGER RD over Middleton Canal 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 2023.

How much traffic does Stc 3767;MUNGER RD over Middleton Canal carry?

About 3,600 vehicles per day (2023 count).

How long is Stc 3767;MUNGER RD over Middleton Canal?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 28 ft wide.

Who owns Stc 3767;MUNGER RD over Middleton Canal?

It is owned by the County Highway Agency.