US Bridges

Dryden Road over South Br. Flint River

Fair

Lapeer County, Michigan · Sec. 12-13 Metamora Twp. · Structure no. 000000000005368

Built
1994
31 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
2,972
2020 count
Owner
County
County Highway Agency

About this bridge

Dryden Road over South Br. Flint River is a prestressed concrete box beam or girders - multiple carrying Dryden Road over South Br. Flint River in Lapeer County, Michigan. It was built in 1994, so it is 31 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 6 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 2,972 vehicles a day, roughly 16% of them trucks, projected to reach 3,407 by 2040. The structure is 44 ft (13.3 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesDryden Road
CrossesSouth Br. Flint River
LocationSec. 12-13 Metamora Twp.
RouteCounty Highway 4412
CountyLapeer County
StateMichigan
Coordinates42.94339, -83.22585
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81 US tons
Inventory rating48.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length44 ft (13.3 m)
Longest span40 ft (12.2 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,972 (2020)
Projected traffic3,407 by 2040
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Dryden Road over South Br. Flint River built?

It was built in 1994, making it 31 years old in 2025.

What condition is Dryden Road over South Br. Flint 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 June 2024.

How much traffic does Dryden Road over South Br. Flint River carry?

About 2,972 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is Dryden Road over South Br. Flint River?

The structure is 44 ft (13.3 m) long with a longest span of 40 ft (12.2 m) and a deck 44 ft wide.

Who owns Dryden Road over South Br. Flint River?

It is owned by the County Highway Agency.