US Bridges

Irving Road over Thornapple River

Fair

Barry County, Michigan · 0.5 MI W of Mccann RD · Structure no. 000000000000557

Built
1962
63 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
135 ft
3 main spans
Daily traffic
477
2015 count
Owner
County
County Highway Agency

About this bridge

Irving Road over Thornapple River is a prestressed concrete box beam or girders - multiple carrying Irving Road over Thornapple River in Barry County, Michigan. It was built in 1962, so it is 63 years old, older 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 477 vehicles a day, roughly 2% of them trucks, projected to reach 501 by 2035. The structure is 135 ft (41.1 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesIrving Road
CrossesThornapple River
Location0.5 MI W of Mccann RD
RouteCounty Highway 0
CountyBarry County
StateMichigan
Coordinates42.68917, -85.42553
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.1 US tons
Inventory rating34.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length135 ft (41.1 m)
Longest span45 ft (13.7 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic477 (2015)
Projected traffic501 by 2035
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Irving Road over Thornapple River built?

It was built in 1962, making it 63 years old in 2025.

What condition is Irving Road over Thornapple 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 July 2023.

How much traffic does Irving Road over Thornapple River carry?

About 477 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is Irving Road over Thornapple River?

The structure is 135 ft (41.1 m) long with a longest span of 45 ft (13.7 m) and a deck 33 ft wide.

Who owns Irving Road over Thornapple River?

It is owned by the County Highway Agency.