US Bridges

N3100 (eastern) over Slwc R.R. & ST under

Fair

Oklahoma County, Oklahoma · .3N Reno ST · Structure no. 220980000000000

Built
1988
37 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,034 ft
14 main spans
Daily traffic
9,300
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N3100 (eastern) over Slwc R.R. & ST under is a prestressed concrete stringer/multi-beam or girder carrying N3100 (eastern) over Slwc R.R. & ST under in Oklahoma County, Oklahoma. It was built in 1988, so it is 37 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 9,300 vehicles a day, roughly 5% of them trucks, projected to reach 14,880 by 2042. The structure is 1,034 ft (315.2 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesN3100 (eastern)
CrossesSlwc R.R. & ST under
Location.3N Reno ST
RouteCity Street N3100
CountyOklahoma County
StateOklahoma
Coordinates35.47053, -97.47681
Functional classUrban Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans14
Design loadHS 20
Structure length1,034 ft (315.2 m)
Longest span80 ft (24.4 m)
Deck width60 ft (18.3 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,300 (2022)
Projected traffic14,880 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$3.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was N3100 (eastern) over Slwc R.R. & ST under built?

It was built in 1988, making it 37 years old in 2025.

What condition is N3100 (eastern) over Slwc R.R. & ST under 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 July 2023.

How much traffic does N3100 (eastern) over Slwc R.R. & ST under carry?

About 9,300 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N3100 (eastern) over Slwc R.R. & ST under?

The structure is 1,034 ft (315.2 m) long with a longest span of 80 ft (24.4 m) and a deck 60 ft wide.

Who owns N3100 (eastern) over Slwc R.R. & ST under?

It is owned by the City or Municipal Highway Agency.