US Bridges

US-31 Br NB over SB Webster ST

Fair

Muskegon County, Michigan · 0.20 MI N of Southern Ave · Structure no. 000000000012610

Built
1993
32 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
170 ft
3 main spans
Daily traffic
8,347
2007 count
Owner
State
State Highway Agency

About this bridge

US-31 Br NB over SB Webster ST is a prestressed concrete stringer/multi-beam or girder carrying US-31 Br NB over SB Webster ST in Muskegon County, Michigan. It was built in 1993, so it is 32 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 8,347 vehicles a day, projected to reach 10,000 by 2022. The structure is 170 ft (51.8 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS-31 Br NB
CrossesSB Webster ST
Location0.20 MI N of Southern Ave
RouteU.S. Route 31
CountyMuskegon County
StateMichigan
Coordinates43.22841, -86.2599
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 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 alignment6: Equal to present minimum criteria
Operating rating74.6 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span93 ft (28.3 m)
Deck width43 ft (13.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,347 (2007)
Projected traffic10,000 by 2022
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
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-31 Br NB over SB Webster ST built?

It was built in 1993, making it 32 years old in 2025.

What condition is US-31 Br NB over SB Webster ST 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 US-31 Br NB over SB Webster ST carry?

About 8,347 vehicles per day (2007 count).

How long is US-31 Br NB over SB Webster ST?

The structure is 170 ft (51.8 m) long with a longest span of 93 ft (28.3 m) and a deck 43 ft wide.

Who owns US-31 Br NB over SB Webster ST?

It is owned by the State Highway Agency.