State profile · Above national median SD

Guam bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Guam - drawn straight from the FHWA National Bridge Inventory.

59
Public bridges
37.3%
Good condition
15.3%
Poor condition
15.3%
Structurally deficient

Data updated May 2026

Total Bridges

59

Public highway bridges in Guam

Good Condition

37.3%

22 bridges rated 7-9

-12.7pp vs 50% benchmark

Poor Condition

15.3%

9 bridges rated 0-4

Structurally Deficient

15.3%

9 bridges flagged for repair priority

8.3pp vs national avg 7.0%

Guam vs national bridge condition

Guam - Good condition share 37.3%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Guam - Structurally deficient share 50.8%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Guam37.3%47.5%15.3%GoodFairPoor (structurally deficient)
Bridge inventory deck-condition mix - Guam (FHWA NBI)

Counties (1)

Guam 59

Guam vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient, the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Guam on the same metric.

PR

Puerto Rico

11.98% top marginal rate
Structure
Progressive
Burden @ $100K
$2,387

ME

Maine

13.23% top marginal rate
Structure
Progressive
Burden @ $100K
$771
Selected

GU

Guam

15.25% top marginal rate
Structure
Progressive
Burden @ $100K
$59

WV

West Virginia

16.02% top marginal rate
Structure
Progressive
Burden @ $100K
$7,679

SD

South Dakota

16.24% top marginal rate
Structure
Progressive
Burden @ $100K
$5,905

Bridges Needing Most Attention in Guam

Six lowest-condition bridges in Guam, ranked by composite NBI rating. Each is inspected at least every 24 months.

Route 4

Poor

Over: Manell Stream

3.8mi SE Rte4/Rte2, Guam, GU

Built 1960 Load: 7.1 t ADT: 4,000

Route 4

Poor

Over: Manell Stream

.3mi E on Rte4/Quinene Rd, Guam, GU

Built 1960 Load: 7.1 t ADT: 4,000

Route 4

Structurally Deficient

Over: Ajayan River

8.7mi S of RTE4 n RTE4A, Guam, GU

Built 1968 Load: 12.6 t ADT: 3,000

Route 4

Poor

Over: Pago River

0.8mi S of Rte4/Rte10, Guam, GU

Built 1984 Load: 15.6 t ADT: 25,000

Route 1

Structurally Deficient

Over: Atantano River

.25mi S of RTE1 n RTE2A, Guam, GU

Built 1953 Load: 17.5 t ADT: 31,000

Route 4

Poor

Over: Talofofo River

0.4mi W of Rte4/4A, Guam, GU

Built 1979 Load: 23.7 t ADT: 6,500

All Bridges in Guam

NA

Fair

Over: Umatac Bridge

8.8mi S Rte2/Rte12, Guam, GU

Built 1985

Umatac Bridge

Fair

Over: Umatac

8.7mi S Rte2/Rte12, Guam, GU

Built 1985

Joutan Lane

Fair

Over: Manell Stream

Jct of Joutan Ln/Rte4, Guam, GU

Built 1960 ADT: 1,000

J. Baza St

Fair

Over: Manell Stream

0.001mi N of Hwy4, Guam, GU

Built 1960 ADT: 200

Tailagan Road

Fair

Over: Tailagan River

0.5mi SE of LeoPal/Chalan, Guam, GU

Built 1988 Load: 11.3 t ADT: 300

Route 1

Fair

Over: Fonte River

0.1mi E of Rte1/Rte6, Guam, GU

Built 1982 Load: 13.9 t ADT: 34,400

Santa Rita Dr

Fair

Over: Atantano River

0.3mi E of Rte 2A, Guam, GU

Built 1985 Load: 16.2 t ADT: 1,074

Route 1

Fair

Over: Taguag River

0.7mi N of Rte1/Rte6, Guam, GU

Built 1950 Load: 17.5 t ADT: 38,000

Espinosa Ave

Fair

Over: Geus River

0.5 mi N of Rte4/Espinosa, Guam, GU

Built 1985 Load: 18.1 t ADT: 500

Route 4

Fair

Over: Umatac River

0.01mi N of Rte2/Pileo, Guam, GU

Built 1985 Load: 19.4 t ADT: 1,700

Route 4

Fair

Over: Inarajan River

0.19mi S of Rte4/Chagamin, Guam, GU

Built 1977 Load: 21.4 t ADT: 3,000

Route 1

Fair

Over: Sasa River

0.4mi S of Rte1/Hwy18, Guam, GU

Built 1992 Load: 21.7 t ADT: 32,000

Route 1

Fair

Over: Laguas River

1.2mi S of Rte1/Rte6, Guam, GU

Built 1993 Load: 22.0 t ADT: 32,000

Serenu Ave.

Fair

Over: Serenu Channel

0.06mi N of Rte1, Guam, GU

Built 1960 Load: 22.7 t ADT: 4,000

Route 4

Fair

Over: Lygog River

3.5mi SE of Merizo, Guam, GU

Built 1976 Load: 23.0 t ADT: 2,500

Route 2

Fair

Over: Taleyfac River

.4miS of Rte2 n Pagachao, Guam, GU

Built 1977 Load: 23.3 t ADT: 7,000

Route 1

Fair

Over: Asan River

1.2mi W of RTE1 n RTE6, Guam, GU

Built 1970 Load: 23.7 t ADT: 38,000

Ramona Street

Fair

Over: Asan River

0.1mi S of Ramona/Rte1, Guam, GU

Built 1985 Load: 26.2 t ADT: 1,000

Route 4

Fair

Over: Pauliloc River

4.5mi SE of RTE4 n RTE 4A, Guam, GU

Built 1972 Load: 26.2 t ADT: 3,050

Chalan Aguon

Fair

Over: Ylig River

0.4mi WonCha. Ag. n RTE4, Guam, GU

Built 1985 Load: 26.9 t ADT: 500

Route 4

Fair

Over: Inarajan River

0.1mi SW of Rte4/Chaga, Guam, GU

Built 1985 Load: 27.2 t ADT: 3,000

Route 4

Fair

Over: Sumay

3mi SE of Merizo, Guam, GU

Built 1985 Load: 27.5 t ADT: 1,400

Hwy 2A

Fair

Over: Namo River

0.03mi S of Rte2/Hwy 2A, Guam, GU

Built 1973 Load: 29.5 t ADT: 12,000

Route 4

Fair

Over: Geus River

0.2mi S of Rte4/Espinosa, Guam, GU

Built 1982 Load: 30.1 t ADT: 2,500

Route 10A

Fair

Over: Route 16

.8mi S of RTE16 n RTE27, Guam, GU

Built 2000 Load: 34.0 t ADT: 26,400

Leo Palace Road

Fair

Over: Pago River

1.4mi S of LeoPalace/Rte4, Guam, GU

Built 1993 Load: 40.5 t ADT: 2,000

Maria Candelaria

Fair

Over: Fonte River

0.9mi E of Maria C/Rte 6, Guam, GU

Built 1975 Load: 44.7 t ADT: 2,000

Piti Channel

Fair

Over: Piti Channel

1.4mi W of Rte1 and 11, Guam, GU

Built 1982 Load: 71.0 t ADT: 4,000

Route 4

Good

Over: Ylig River

0.5mi N of Rte4 and 17, Guam, GU

Built 1968 ADT: 6,000

Rte 4

Good

Over: Bile River

1mi NE of RTE4 n Merizo, Guam, GU

Built 2018 ADT: 4,808

Route 4

Good

Over: Pigua River

0.7mi N Rte4/Mata Ave, Guam, GU

Built 1930 ADT: 4,808

Route 7

Good

Over: Fonte River

0.11mi E of RTE 6 & 7, Guam, GU

Built 1955 Load: 16.2 t ADT: 2,000

Assumption Dr

Good

Over: Masso River

0.3mi NE of Rte1 and 6, Guam, GU

Built 1970 Load: 18.5 t ADT: 1,000

Route 4

Good

Over: As-Linget River

4.4mi SE of RTE4 n RTE 4A, Guam, GU

Built 1976 Load: 18.8 t ADT: 3,000

Route 12A

Good

Over: Namo River

.1mi W of RTE12 n Pale F., Guam, GU

Built 1977 Load: 23.3 t ADT: 500

Route 10A

Good

Over: Airport Drainage

0.5mi SE of Rte 10A/Rte 1, Guam, GU

Built 1978 Load: 24.0 t ADT: 19,999

Hwy 33

Good

Over: Agana River

0.3mi E of Hwy33/Rte4, Guam, GU

Built 1988 Load: 27.2 t ADT: 20,000

Nino Perdido Dr

Good

Over: Asan River

0.03mi S of Rte1 & Nino, Guam, GU

Built 1982 Load: 27.2 t ADT: 2,500

Route 4

Good

Over: Agfayan River

6.5mi S of RTE4 n RTE4A, Guam, GU

Built 2015 Load: 27.5 t ADT: 3,000

Route 4

Good

Over: Chaot River

1.7mi S of RTE4 and RTE1, Guam, GU

Built 1977 Load: 29.2 t ADT: 30,000

Route 4

Good

Over: Toguan River

9.9mi S of RTE2 n RTE12, Guam, GU

Built 1985 Load: 30.5 t ADT: 3,000

Route 1

Good

Over: Asan River

Int. of RTE1 n Santa Ana, Guam, GU

Built 1985 Load: 30.8 t ADT: 38,000

Route 1

Good

Over: Agana River

Int. of Cha. Can. n RTE1, Guam, GU

Built 2014 Load: 32.7 t ADT: 39,000

Route 1

Good

Over: Agueda River

1.4mi N of RTE1 at Hwy 2A, Guam, GU

Built 1960 Load: 33.4 t ADT: 17,000

Chalan Santo Papa

Good

Over: Agana River

.1mi E Chalan N RTE4, Guam, GU

Built 2015 Load: 34.7 t ADT: 17,000

Jose Leon Guererro

Good

Over: Asan River

0.14mi S of Rte 1 and JL, Guam, GU

Built 1985 Load: 35.0 t ADT: 2,000

Jose Leon Guererro

Good

Over: Asan River

0.2mi W of Guerrero/Santa, Guam, GU

Built 1985 Load: 36.9 t ADT: 2,000

Route 1

Good

Over: Matgue River

1.7mi SW of Rte1/Rte 6, Guam, GU

Built 1955 Load: 38.6 t ADT: 38,000

Route 1

Good

Over: Masso River

0.05mi E of Rte 1 and 11, Guam, GU

Built 1980 Load: 54.8 t ADT: 30,100

Route 11

Good

Over: Tepungan Channel

0.4mi W of RTE 1, Guam, GU

Built 1900 Load: 69.0 t ADT: 4,000

Showing 1-50 of 59 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

Every figure on PlainBridge 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.