US Bridges

Vernon Road over North Br Salt River

Fair

Isabella County, Michigan · 0.2M W SE Cor Sec 33 T16N · Structure no. 000000000004292

Built
1980
45 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
93
2002 count
Owner
County
County Highway Agency

About this bridge

Vernon Road over North Br Salt River is a prestressed concrete box beam or girders - multiple carrying Vernon Road over North Br Salt River in Isabella County, Michigan. It was built in 1980, so it is 45 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 93 vehicles a day, projected to reach 140 by 2022. The structure is 60 ft (18.2 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesVernon Road
CrossesNorth Br Salt River
Location0.2M W SE Cor Sec 33 T16N
RouteCounty Highway 0
CountyIsabella County
StateMichigan
Coordinates43.72825, -84.67076
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.9 US tons
Inventory rating31.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length60 ft (18.2 m)
Longest span56 ft (17 m)
Deck width31 ft (9.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic93 (2002)
Projected traffic140 by 2022
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Vernon Road over North Br Salt River built?

It was built in 1980, making it 45 years old in 2025.

What condition is Vernon Road over North Br Salt River 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 2024.

How much traffic does Vernon Road over North Br Salt River carry?

About 93 vehicles per day (2002 count).

How long is Vernon Road over North Br Salt River?

The structure is 60 ft (18.2 m) long with a longest span of 56 ft (17 m) and a deck 31 ft wide.

Who owns Vernon Road over North Br Salt River?

It is owned by the County Highway Agency.