US Bridges

Dorrance Road over I-69

Fair

Branch County, Michigan · 1.8 MI S of US-12 · Structure no. 000000000001083

Built
1967
58 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
254 ft
4 main spans
Daily traffic
1,450
1988 count
Owner
State
State Highway Agency

About this bridge

Dorrance Road over I-69 is a steel stringer/multi-beam or girder carrying Dorrance Road over I-69 in Branch County, Michigan. It was built in 1967, so it is 58 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 1,450 vehicles a day, roughly 3% of them trucks, projected to reach 1,668 by 2008. The structure is 254 ft (77.4 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesDorrance Road
CrossesI-69
Location1.8 MI S of US-12
RouteCounty Highway 1271
CountyBranch County
StateMichigan
Coordinates41.91198, -84.98201
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment6: Equal to present minimum criteria
Operating rating74.6 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length254 ft (77.4 m)
Longest span84 ft (25.6 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,450 (1988)
Projected traffic1,668 by 2008
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Dorrance Road over I-69 built?

It was built in 1967, making it 58 years old in 2025.

What condition is Dorrance Road over I-69 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 May 2023.

How much traffic does Dorrance Road over I-69 carry?

About 1,450 vehicles per day (1988 count), of which roughly 3% are trucks.

How long is Dorrance Road over I-69?

The structure is 254 ft (77.4 m) long with a longest span of 84 ft (25.6 m) and a deck 31 ft wide.

Who owns Dorrance Road over I-69?

It is owned by the State Highway Agency.