US Bridges

Dixboro RD over M-14

Fair

Washtenaw County, Michigan · 1.6 MI E of E JCT US-23 · Structure no. 000000000010915

Built
1964
61 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
243 ft
4 main spans
Daily traffic
5,047
1995 count
Owner
State
State Highway Agency

About this bridge

Dixboro RD over M-14 is a prestressed concrete stringer/multi-beam or girder carrying Dixboro RD over M-14 in Washtenaw County, Michigan. It was built in 1964, so it is 61 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 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 5,047 vehicles a day, roughly 3% of them trucks, projected to reach 5,804 by 2015. The structure is 243 ft (74 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesDixboro RD
CrossesM-14
Location1.6 MI E of E JCT US-23
RouteCounty Highway 8179
CountyWashtenaw County
StateMichigan
Coordinates42.32538, -83.66156
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.7 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length243 ft (74 m)
Longest span72 ft (21.9 m)
Deck width35 ft (10.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,047 (1995)
Projected traffic5,804 by 2015
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 Dixboro RD over M-14 built?

It was built in 1964, making it 61 years old in 2025.

What condition is Dixboro RD over M-14 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 September 2024.

How much traffic does Dixboro RD over M-14 carry?

About 5,047 vehicles per day (1995 count), of which roughly 3% are trucks.

How long is Dixboro RD over M-14?

The structure is 243 ft (74 m) long with a longest span of 72 ft (21.9 m) and a deck 35 ft wide.

Who owns Dixboro RD over M-14?

It is owned by the State Highway Agency.