US Bridges

US 67 N over Mo 8

Poor

St. Francois County, Missouri · S 29 T 37 N R 5 E · Structure no. 472

Built
1959
66 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
139 ft
1 main span
Daily traffic
17,758
2024 count
Owner
State
State Highway Agency

About this bridge

US 67 N over Mo 8 is a steel stringer/multi-beam or girder carrying US 67 N over Mo 8 in St. Francois County, Missouri. It was built in 1959, so it is 66 years old, older than the Missouri average of 45.1 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 17,758 vehicles a day, roughly 9% of them trucks, projected to reach 31,077 by 2044. The structure is 139 ft (42.4 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS 67 N
CrossesMo 8
LocationS 29 T 37 N R 5 E
RouteU.S. Route 67
CountySt. Francois County
StateMissouri
Coordinates37.88085, -90.50941
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating34.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 20
Structure length139 ft (42.4 m)
Longest span68 ft (20.7 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,758 (2024)
Projected traffic31,077 by 2044
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 67 N over Mo 8 built?

It was built in 1959, making it 66 years old in 2025.

What condition is US 67 N over Mo 8 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 October 2024.

How much traffic does US 67 N over Mo 8 carry?

About 17,758 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is US 67 N over Mo 8?

The structure is 139 ft (42.4 m) long with a longest span of 68 ft (20.7 m) and a deck 33 ft wide.

Who owns US 67 N over Mo 8?

It is owned by the State Highway Agency.