How many bridges are in Guam?

Guam has 47 public highway bridges tracked in the FHWA National Bridge Inventory. View detailed condition data for each bridge on PlainBridges.

What percentage of bridges in Guam are in Poor condition?

12.8% of bridge records in Guam are in Poor condition, meaning the lowest applicable major-component rating is 4 or below, compared with 7.5% across state inventories.

State profile · Above median Poor share

Guam bridge safety

Name: Guam public highway bridge inventory (FHWA NBI)
Creator: PlainBridges
License: https://creativecommons.org/publicdomain/zero/1.0/

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Guam.

Compiled by PlainBridges

47
Public bridges: 42.5%
Good condition: 12.8%
Poor condition

Guam has 47 public highway bridges in the FHWA's 2024 National Bridge Inventory, and 6 of them are rated Poor.

That is 12.8% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 47 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

Public highway bridges in Guam

Good Condition

42.5%

20 bridges rated 7-9

-7.5pp vs 50% benchmark

Poor Condition

12.8%

6 bridges whose lowest applicable component is rated 0-4

5.3pp vs national avg 7.5%

Guam vs national bridge condition

Guam - Good condition share 42.5%

National avg

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

Guam - Poor-condition share 42.6%

National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Inventory size and Poor-condition share are different measures: Guam has 47 bridges and a 12.8% Poor-condition share in the 2024 NBI, rank #47 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Guam vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

47 53rd of 54 higher than 1 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Guam

The highlighted point is Guam: 47 bridges and 12.77% in Poor condition, rank #47 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Guam on that same Poor-share ordering:

Louisiana: 12,698 bridges · 11.48% Poor
Pennsylvania: 23,299 bridges · 12.58% Poor
Guam: 47 bridges · 12.77% Poor
Puerto Rico: 2,385 bridges · 13.92% Poor
Rhode Island: 783 bridges · 15.20% Poor

The full national sortable table lives on the rankings page.

Material families in Guam

Exclusive FHWA material families across all 47 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Concrete 22 bridges (47%) Prestressed concrete 22 bridges (47%) Steel 3 bridges (6%)

When Guam’s bridges were built

Pre-1950 construction accounts for 4.3% of the 47 bridges with a recorded original year in Guam. Era bands are orthogonal to the Poor-share ranking above.

Pre-1950 2 bridges (4%) 1950–1979 20 bridges (43%) 1980–1999 20 bridges (43%) 2000+ 5 bridges (11%)

Condition Distribution

Bridge inventory deck-condition mix - Guam (FHWA NBI)

Counties (1)

Guam vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Guam on the same metric.

Louisiana

11.48% top marginal rate

Structure: Progressive
Burden @ $100K: $12,698

Pennsylvania

12.58% top marginal rate

Structure: Progressive
Burden @ $100K: $23,299

Selected

Guam

12.77% top marginal rate

Structure: Progressive
Burden @ $100K: $47

Puerto Rico

13.92% top marginal rate

Structure: Progressive
Burden @ $100K: $2,385

Rhode Island

15.20% top marginal rate

Structure: Progressive
Burden @ $100K: $783

Bridges Needing Most Attention in Guam

Six lowest-condition bridges in Guam, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

Route 4

Poor

Over: Ajayan River

8.7mi S of RTE4 n RTE4A, GU

Built 1968 Load: 12.6 t ADT: 3,000

Route 4

Poor

Over: Pago River

0.8mi S of Rte4/Rte10, GU

Built 1984 Load: 15.6 t ADT: 25,000

Route 1

Poor

Over: Atantano River

.25mi S of RTE1 n RTE2A, GU

Built 1953 Load: 17.5 t ADT: 31,000

Route 4

Poor

Over: Talofofo River

0.4mi W of Rte4/4A, GU

Built 1979 Load: 23.7 t ADT: 6,500

Route 17

Poor

Over: Aplacho River

.5mi N of Rte17 n RTE5, GU

Built 1960 Load: 25.9 t ADT: 6,300

Route 4

Poor

Over: Togcha River

0.4mi W of Rte4 and 4A, GU

Built 1972 Load: 38.6 t ADT: 8,500

All Bridges in Guam

Sort by:

Guam vs national bridge condition

Material families in Guam

When Guam’s bridges were built

Condition Distribution

Counties (1)

Bridges Needing Most Attention in Guam

Route 4

Route 4

Route 1

Route 4

Route 17

Route 4

All Bridges in Guam

Tailagan Road

Route 1

Santa Rita Dr

Espinosa Ave

Route 4

Route 4

Route 1

Route 1

Serenu Ave.

Route 4

Route 2

Route 1

Ramona Street

Route 4

Chalan Aguon

Route 4

Route 4

Hwy 2A

Route 4

Route 10A

Leo Palace Road

Rte 4

Route 4

Route 4

Route 7

Assumption Dr

Route 4

Route 12A

Route 10A

Hwy 33

Route 4

Route 4

Route 4

Route 1

Route 1

Route 1

Chalan Santo Papa

Jose Leon Guererro

Jose Leon Guererro

Route 1

Route 11

Route 4

Route 4

Route 1

Route 4

Route 17

Route 4

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