US Bridges

Warren RD over Maple River

FairPosted for load

Shiawassee County, Michigan · 1.6 MI SE of Ovid · Structure no. 000000000009852

Built
1959
66 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
85 ft
2 main spans
Daily traffic
1,202
2003 count
Owner
County
County Highway Agency

About this bridge

Warren RD over Maple River is a prestressed concrete box beam or girders - multiple carrying Warren RD over Maple River in Shiawassee County, Michigan. It was built in 1959, so it is 66 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. Its operating status is: posted for load restriction.

It carries about 1,202 vehicles a day, roughly 10% of them trucks, projected to reach 1,786 by 2023. The structure is 85 ft (25.9 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesWarren RD
CrossesMaple River
Location1.6 MI SE of Ovid
RouteCounty Highway 0
CountyShiawassee County
StateMichigan
Coordinates42.99378, -84.34417
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating32.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.4 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,202 (2003)
Projected traffic1,786 by 2023
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Warren RD over Maple River built?

It was built in 1959, making it 66 years old in 2025.

What condition is Warren RD over Maple 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 April 2024.

How much traffic does Warren RD over Maple River carry?

About 1,202 vehicles per day (2003 count), of which roughly 10% are trucks.

How long is Warren RD over Maple River?

The structure is 85 ft (25.9 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns Warren RD over Maple River?

It is owned by the County Highway Agency.