Total bridges
129
Public highway bridges in Murray County
County profile · official public datasets
Murray County, OK
129 public highway bridges tracked in the FHWA National Bridge Inventory: 46.5% rated Good, 51.2% Fair, 2.3% Poor.
- 129
- Public bridges
- 46.5%
- Good condition
- 2.3%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Murray County posts a top-quartile lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 18%
- lowest Poor share in state
- 2.3%
- Poor-condition share
- 129
- public highway bridges
- 1976
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Murray County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Murray County ranks #14 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.3%). Murray County, Oklahoma contains 129 public highway bridges. Roughly 46.5% are rated “Good,” 51.2% “Fair,” and 2.3% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
46.5%
60 of 129 rated 7-9
Fair condition
51.2%
66 of 129 rated 5-6
Poor condition
2.3%
3 of 129 rated 4 or below
In-state Poor-share rank
#14 of 77
Among Oklahoma counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 129 NBI-tracked bridges by lowest applicable component rating.
Good 46.5% (60)
Fair 51.2% (66)
Poor 2.3% (3)
Murray County's Poor-condition bridges carry 300 vehicle crossings a day
That is 0.1% of the county's reported daily bridge traffic on 2.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 100 crossings a day against 2,246 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 129 of 129 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
51.9% of Murray County's bridges have passed the 50-year mark
67 of the 129 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 46.5% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 33.3% of the county's Poor-condition bridge traffic
N3288 over LICK CREEK, built 1938, carries 100 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 3-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 300 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Murray County's bridges were built
129 bridges with a recorded construction year, grouped by decade
- 1920s 3
1920–1929
3 bridges
- 1930s
1930–1939
12 bridges
- 1940s 9
1940–1949
9 bridges
- 1950s 10
1950–1959
10 bridges
- 1960s
1960–1969
29 bridges
- 1970s 6
1970–1979
6 bridges
- 1980s 11
1980–1989
11 bridges
- 1990s
1990–1999
24 bridges
- 2000s 10
2000–2009
10 bridges
- 2010s 6
2010–2019
6 bridges
- 2020s 9
2020–2029
9 bridges
What this shows Construction peaked in the 1960s, when 29 of the county's bridges still in the inventory were built, which is 22.5% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1976) matches the Oklahoma average (1977).
How Murray County compares with Oklahoma's closest counties by inventory size
The 5 Oklahoma counties nearest Murray County in number of bridges, with their condition splits. Its 2.3% Poor share is the 3rd-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1975 is in line with the group.
Showing the 5 closest of 76 Oklahoma counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Coal County | 142 | 38.7% | 54.9% | 6.3% | 1974 |
| Adair County | 139 | 35.3% | 50.4% | 14.4% | 1970 |
| Love County | 133 | 42.1% | 56.4% | 1.5% | 1977 |
| Murray County (this page) | 129 | 46.5% | 51.2% | 2.3% | 1976 |
| Harper County | 128 | 33.6% | 64.8% | 1.6% | 1975 |
| Nowata County | 126 | 44.4% | 42.9% | 12.7% | 1980 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Murray County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Murray County, both outside Oklahoma so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OK (129 bridges here).
- Clay County, AL · 129 bridges
- Cross County, AR · 129 bridges
- Lake County, CA · 129 bridges
- Lincoln County, CO · 129 bridges
Similar average build year
Nearest mean year-built outside OK (1976 here).
- Marion County, IN · avg 1976 · 958 bridges
- Mohave County, AZ · avg 1976 · 641 bridges
- Prince George's County, MD · avg 1976 · 576 bridges
- New Castle County, DE · avg 1976 · 527 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (66)
N3175
FairOver: EIGHT MILE CREEK
0.8S OF HENNEPIN, Murray, OK
Built 2009 Load: 34.5 t ADT: 24
U.S. 77
FairOver: HONEY CREEK
4.5 MI S JCT SH7, Murray, OK
Built 1926 Load: 35.4 t ADT: 1,200
I-35 SB
FairOver: RED BRANCH CREEK
9.4 MI N CARTER C/L, Murray, OK
Built 1969 Load: 35.4 t ADT: 14,750
I-35 NB
FairOver: WILD HORSE CREEK OFLOW
1.5 MI N JCT SH7, Murray, OK
Built 1969 Load: 35.4 t ADT: 15,800
I-35
FairOver: CREEK
6.0 MI N CARTER C/L, Murray, OK
Built 1969 Load: 38.5 t ADT: 25,600
N3370
FairOver: CREEK
3.3 N 2. W OF SULPHUR, Murray, OK
Built 1988 Load: 39.0 t ADT: 100
E1710
FairOver: GUY SANDY CREEK
1.6 N 3.2 W OF SULPHUR, Murray, OK
Built 1988 Load: 39.0 t ADT: 100
N3310
FairOver: DRY SANDY CREEK
1. W 1.6 S OF SH 7, Murray, OK
Built 1992 Load: 39.0 t ADT: 250
I-35 NB
FairOver: S.H. 77D UNDER
4.8 MI N CARTER C/L, Murray, OK
Built 1969 Load: 41.7 t ADT: 15,600
E1670
FairOver: CHIGLEY SANDY CREEK
0.6 MI E OF CHIGLEY, Murray, OK
Built 1987 Load: 42.6 t ADT: 100
5011C
FairOver: GUY SANDY CREEK
2.6 N 3.3 W US177/SH7 JCT, Murray, OK
Built 1994 Load: 42.6 t ADT: 100
N3310
FairOver: CHIGLEY SANDY CREEK
.7 E .4 N OF DAVIS, Murray, OK
Built 1996 Load: 42.6 t ADT: 320
E1720
FairOver: ROCK CREEK
1.0 MI N OF SULPHUR, Murray, OK
Built 1992 Load: 45.4 t ADT: 100
S.H. 7
FairOver: FIVE MILE CREEK
2.3 MI NE MURRAY C/L, Murray, OK
Built 1993 Load: 45.4 t ADT: 3,000
WYNNEWOOD AVE.
FairOver: ROCK CREEK
.1W OF U.S. 177, Murray, OK
Built 2005 Load: 47.2 t ADT: 2,082
E1650
FairOver: CREEK
0.5 MI S OF WYNNEWOOD, Murray, OK
Built 1965 Load: 55.3 t ADT: 100
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.