US Bridges

US-23 SB/M-14 EB over M-14 W

Poor

Washtenaw County, Michigan · @ W JCT US-23 (lower) · Structure no. 000000000010918

Built
1962
63 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
127 ft
3 main spans
Daily traffic
24,781
2007 count
Owner
State
State Highway Agency

About this bridge

US-23 SB/M-14 EB over M-14 W is a steel stringer/multi-beam or girder carrying US-23 SB/M-14 EB over M-14 W in Washtenaw 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 24,781 vehicles a day, roughly 18% of them trucks, projected to reach 40,500 by 2015. The structure is 127 ft (38.7 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesUS-23 SB/M-14 EB
CrossesM-14 W
Location@ W JCT US-23 (lower)
RouteU.S. Route 23
CountyWashtenaw County
StateMichigan
Coordinates42.32022, -83.73949
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
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.
Last inspectionJune 2024
Inspection intervalevery 12 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length127 ft (38.7 m)
Longest span55 ft (16.7 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,781 (2007)
Projected traffic40,500 by 2015
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 US-23 SB/M-14 EB over M-14 W built?

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

What condition is US-23 SB/M-14 EB over M-14 W in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does US-23 SB/M-14 EB over M-14 W carry?

About 24,781 vehicles per day (2007 count), of which roughly 18% are trucks.

How long is US-23 SB/M-14 EB over M-14 W?

The structure is 127 ft (38.7 m) long with a longest span of 55 ft (16.7 m) and a deck 44 ft wide.

Who owns US-23 SB/M-14 EB over M-14 W?

It is owned by the State Highway Agency.