US Bridges

Lahring RD over US-23

Good

Genesee County, Michigan · 1.6 MI N of Fenton · Structure no. 000000000002478

Built
1957
68 years old, rebuilt 1994
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
238 ft
4 main spans
Daily traffic
2,669
1994 count
Owner
State
State Highway Agency

About this bridge

Lahring RD over US-23 is a steel stringer/multi-beam or girder carrying Lahring RD over US-23 in Genesee County, Michigan. It was built in 1957 and reconstructed in 1994, so it is 68 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,669 vehicles a day, roughly 2% of them trucks, projected to reach 4,800 by 2016. The structure is 238 ft (72.5 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLahring RD
CrossesUS-23
Location1.6 MI N of Fenton
RouteCounty Highway 0
Coordinates42.84104, -83.73624
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.6 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length238 ft (72.5 m)
Longest span63 ft (19.2 m)
Deck width33 ft (10.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,669 (1994)
Projected traffic4,800 by 2016
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$97,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lahring RD over US-23 built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1994.

What condition is Lahring RD over US-23 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Lahring RD over US-23 carry?

About 2,669 vehicles per day (1994 count), of which roughly 2% are trucks.

How long is Lahring RD over US-23?

The structure is 238 ft (72.5 m) long with a longest span of 63 ft (19.2 m) and a deck 33 ft wide.

Who owns Lahring RD over US-23?

It is owned by the State Highway Agency.